start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2025 dt-pub=20250325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=岡山県高梁川と旭川におけるフルボ酸鉄の時空間評価 kn-title=Spatial and temporal evaluations of fulvic acid iron in Takahashi and Asahi Rivers in Okayama Prefecture, Japan en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=ROHDOF LACTEM YENGEH en-aut-sei=ROHDOF LACTEM YENGEH en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 END start-ver=1.4 cd-journal=joma no-vol=13 cd-vols= no-issue=4 article-no= start-page=e9631 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2025 dt-pub=20250422 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Case of a Metal Foreign Object Remaining in the Maxillary Bone for an Extended Period: A Case Report en-subtitle= kn-subtitle= en-abstract= kn-abstract=We report a rare case in which a metallic foreign body remained undetected in a patient's maxilla for nearly 40 years after a childhood bicycle accident. Despite the accident, the implant remained in place without causing infection due to the lack of imaging studies at the time. The metal was accidentally discovered during a routine dental imaging examination 40 years later and subsequently surgically removed. This case highlights the importance of comprehensive imaging and the dangers of overlooking foreign bodies, especially in the vulnerable head and neck region. The patient, 53 years old at the time of discovery, presented to the dentist due to discomfort in the palate and nasal cavity. During this visit, radiographs were taken and a foreign body was discovered. Surgical removal of the foreign body revealed significant corrosion and surrounding granulation tissue indicative of foreign body granuloma. Elemental analysis of the foreign body confirmed that it was an iron-based metal, unlike biocompatible materials such as titanium. These findings reinforce the need for close post-trauma evaluation and follow-up, especially in cases of pediatric trauma, to avoid the possibility of long-term complications arising from unnoticed foreign bodies in anatomically significant areas. en-copyright= kn-copyright= en-aut-name=KadoyaKoichi en-aut-sei=Kadoya en-aut-mei=Koichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KunisadaYuki en-aut-sei=Kunisada en-aut-mei=Yuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ObataKyoichi en-aut-sei=Obata en-aut-mei=Kyoichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TakakuraHiroaki en-aut-sei=Takakura en-aut-mei=Hiroaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OgawaTatsuo en-aut-sei=Ogawa en-aut-mei=Tatsuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=IbaragiSoichiro en-aut-sei=Ibaragi en-aut-mei=Soichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil=Department of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Department of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=3 en-affil=Department of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=4 en-affil=Department of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=5 en-affil=Department of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=6 en-affil=Department of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= en-keyword=case report kn-keyword=case report en-keyword=dentistry kn-keyword=dentistry en-keyword=foreign body kn-keyword=foreign body en-keyword=oral cavity kn-keyword=oral cavity en-keyword=trauma kn-keyword=trauma END start-ver=1.4 cd-journal=joma no-vol=19 cd-vols= no-issue=1 article-no= start-page=36 end-page=43 dt-received= dt-revised= dt-accepted= dt-pub-year=2025 dt-pub=2025 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Evaluation of the temporal behavior of fulvic acid iron in Asahi River, Okayama, Japan en-subtitle= kn-subtitle= en-abstract= kn-abstract=Iron is essential for biogeochemical processes in aquatic ecosystems, but its riverine concentration can be affected by environmental conditions. This study assessed weekly fulvic acid iron (FAFe) concentration at a single sampling site in Asahi River from 2022–2023 to explore the differences in the temporal scales. The objectives of this study were to evaluate the effects of physicochemical properties of the river on the concentration of FAFe, analyze the concentration of FAFe in spring, summer, autumn and winter, and assess the relationship between FAFe concentration and land use types of the watershed. The results indicated that physicochemical parameters, such as pH and surface water temperature (SWT) seemed to influence FAFe concentration (p < 0.05). Hydrological dynamics influenced FAFe concentration and transport, revealing an increasing trend during spring (p < 0.001) and summer (p = 0.05), with non-significant trends during autumn and winter (p > 0.05). FAFe exhibited a strong positive correlation with total organic carbon (TOC) (p < 0.001). Upland fields significantly influenced FAFe concentration (p < 0.01) through runoff with abundant NO3– and PO43– into the river. Thus, FAFe concentration in Asahi River was influenced by pH, SWT, TOC, hydrological regime, and agricultural runoff. en-copyright= kn-copyright= en-aut-name=YengehRohdof Lactem en-aut-sei=Yengeh en-aut-mei=Rohdof Lactem kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SomuraHiroaki en-aut-sei=Somura en-aut-mei=Hiroaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MoroizumiToshitsugu en-aut-sei=Moroizumi en-aut-mei=Toshitsugu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MoriYasushi en-aut-sei=Mori en-aut-mei=Yasushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=MaedaMorihiro en-aut-sei=Maeda en-aut-mei=Morihiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=5 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= en-keyword=dissolved iron kn-keyword=dissolved iron en-keyword=seasonal variation kn-keyword=seasonal variation en-keyword=dissolved organic matter kn-keyword=dissolved organic matter en-keyword=fulvic acid iron kn-keyword=fulvic acid iron END start-ver=1.4 cd-journal=joma no-vol=4 cd-vols= no-issue= article-no= start-page=19 end-page=52 dt-received= dt-revised= dt-accepted= dt-pub-year=2025 dt-pub=20250325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Mineralogy and geochemistry of magnetite-garnet bearing skarn deposits surrounding iron-smelting sites in the Kibi region of Japan kn-title=吉備製鉄遺跡周辺地域の磁鉄鉱ざくろ石スカルン鉄鉱石の鉱物学的・地球化学的特徴 en-subtitle= kn-subtitle= en-abstract= kn-abstract=We conducted mineralogical and geochemical analysis of ore samples taken from locations surrounding the Jinmu, Sanpō, and Kōmoto mines in order to determine the source of iron ore uncovered from archaeological sites. The mineral composition of the magnetite-garnet bearing skarn deposits varies from mine to mine: while clinopyroxene and amphibole are present in the Jinmu and Sanpō samples, only a small amount of clinopyroxene occurs in the Kōmoto samples. The chemical compositions of magnetite and garnet are distinctive for each mine. Among the trace elements contained in the magnetite, Mg and Mn tend to be higher in the Kōmoto samples, Ti in the Jinmu samples, and Ca and Si in the Sanpō samples. The garnet from all the mines is andradite, but while the Kōmoto samples contain almost no Al, it is present in the Jinmu and Sanpō samples. Although samples were taken from a limited number of mine areas (three), our analysis provides an index for comparison with iron ore uncovered from archaeological sites, which will aid in provenance determination. en-copyright= kn-copyright= en-aut-name=TAKECHIYasushi en-aut-sei=TAKECHI en-aut-mei=Yasushi kn-aut-name=武智泰史 kn-aut-sei=武智 kn-aut-mei=泰史 aut-affil-num=1 ORCID= en-aut-name=NAKAMURADaisuke en-aut-sei=NAKAMURA en-aut-mei=Daisuke kn-aut-name=中村大輔 kn-aut-sei=中村 kn-aut-mei=大輔 aut-affil-num=2 ORCID= en-aut-name=SUZUKIShigeyuki en-aut-sei=SUZUKI en-aut-mei=Shigeyuki kn-aut-name=鈴木茂之 kn-aut-sei=鈴木 kn-aut-mei=茂之 aut-affil-num=3 ORCID= en-aut-name=RYANJoseph en-aut-sei=RYAN en-aut-mei=Joseph kn-aut-name=ライアンジョセフ kn-aut-sei=ライアン kn-aut-mei=ジョセフ aut-affil-num=4 ORCID= en-aut-name=UWAGAKITakeshi en-aut-sei=UWAGAKI en-aut-mei=Takeshi kn-aut-name=上栫武 kn-aut-sei=上栫 kn-aut-mei=武 aut-affil-num=5 ORCID= en-aut-name=NAGAHARAMasato en-aut-sei=NAGAHARA en-aut-mei=Masato kn-aut-name=長原正人 kn-aut-sei=長原 kn-aut-mei=正人 aut-affil-num=6 ORCID= en-aut-name=YOSHIEYuta en-aut-sei=YOSHIE en-aut-mei=Yuta kn-aut-name=吉江雄太 kn-aut-sei=吉江 kn-aut-mei=雄太 aut-affil-num=7 ORCID= en-aut-name=IKEHATAKei en-aut-sei=IKEHATA en-aut-mei=Kei kn-aut-name=池端慶 kn-aut-sei=池端 kn-aut-mei=慶 aut-affil-num=8 ORCID= en-aut-name=KIMURAOsamu en-aut-sei=KIMURA en-aut-mei=Osamu kn-aut-name=木村理 kn-aut-sei=木村 kn-aut-mei=理 aut-affil-num=9 ORCID= en-aut-name=HATTORIRyoichi en-aut-sei=HATTORI en-aut-mei=Ryoichi kn-aut-name=服部亮一 kn-aut-sei=服部 kn-aut-mei=亮一 aut-affil-num=10 ORCID= affil-num=1 en-affil=Kurashiki Museum of Natural History kn-affil= affil-num=2 en-affil=Okayama University, Department of Earth Sciences kn-affil= affil-num=3 en-affil=Okayama University, Department of Earth Sciences kn-affil= affil-num=4 en-affil=Okayama University, Research Institute for the Dynamics of Civilizations kn-affil= affil-num=5 en-affil=Okayama Prefectural Board of Education kn-affil= affil-num=6 en-affil=The Historical Study Group of Mining and Metallurgy of Japan kn-affil= affil-num=7 en-affil=Mitsui Mining & Smelting Co., Ltd. kn-affil= affil-num=8 en-affil=University of Tsukuba, Faculty of Life and Environmental Sciences kn-affil= affil-num=9 en-affil=Okayama University, Research Institute for the Dynamics of Civilizations kn-affil= affil-num=10 en-affil=Osaka University, Graduate School of Humanities kn-affil= en-keyword=Iron-smithing sites kn-keyword=Iron-smithing sites en-keyword=skarn deposits kn-keyword=skarn deposits en-keyword=mineral composition of ore kn-keyword=mineral composition of ore en-keyword=geochemical analysis kn-keyword=geochemical analysis END start-ver=1.4 cd-journal=joma no-vol=60 cd-vols= no-issue=5 article-no= start-page=6736 end-page=6751 dt-received= dt-revised= dt-accepted= dt-pub-year=2024 dt-pub=202409 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Superior Efficiency Under PWM Harmonic Current in an Axial-Flux PM Machine for HEV/EV Traction: Comparison With a Radial-Flux PM Machine en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper evaluates the harmonic current caused by a pulse width modulation (PWM) inverter and how it affects the efficiency of a novel axial-flux permanent-magnet machine using a ferrite permanent magnet (AF-FePM) in traction applications. First, differences between the finite element analysis (FEA) and experimental results are discussed using a prototype of the proposed AF-FePM. Second, the AF-FePM is compared with a commercially available radial-flux permanent-magnet machine using a Nd-sintered magnet (RF-NdPM). For both machines, the efficiency and loss are calculated using FEA when applying the sinusoidal and harmonic currents. Additionally, we present the superior efficiency of the AF-FePM under the PWM harmonic current during a WLTC driving cycle because the designed model employs the ferrite magnet and a round copper wire, unlike the RF-NdPM. Finally, motor and inverter losses at different switching frequencies are also evaluated. This paper eventually shows that the proposed AF-FePM would be one of the suitable candidates to enhance high efficiency under PWM harmonic current condition based on comprehensive discussion. en-copyright= kn-copyright= en-aut-name=TsunataRen en-aut-sei=Tsunata en-aut-mei=Ren kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakemotoMasatsugu en-aut-sei=Takemoto en-aut-mei=Masatsugu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SaitoTatsuya en-aut-sei=Saito en-aut-mei=Tatsuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=UenoTomoyuki en-aut-sei=Ueno en-aut-mei=Tomoyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=4 en-affil=Sumitomo Electric Industries Ltd. kn-affil= affil-num=5 en-affil=Sumitomo Electric Industries Ltd. kn-affil= en-keyword=Axial gap motor kn-keyword=Axial gap motor en-keyword=axial-flux machine kn-keyword=axial-flux machine en-keyword=carbon-fiber-reinforced plastic kn-keyword=carbon-fiber-reinforced plastic en-keyword=ferrite magnet kn-keyword=ferrite magnet en-keyword=iron loss kn-keyword=iron loss en-keyword=PWM drive kn-keyword=PWM drive en-keyword=PWM harmonic current kn-keyword=PWM harmonic current en-keyword=radial-flux machine kn-keyword=radial-flux machine en-keyword=soft magnetic composite kn-keyword=soft magnetic composite en-keyword=switching frequency kn-keyword=switching frequency en-keyword=WLTC drive kn-keyword=WLTC drive END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=16 article-no= start-page=8593 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2024 dt-pub=20240806 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Development of Antimicrobial Surfaces Using Diamond-like Carbon or Diamond-like Carbon-Based Coatings en-subtitle= kn-subtitle= en-abstract= kn-abstract=The medical device market is a high-growth sector expected to sustain an annual growth rate of over 5%, even in developed countries. Daily, numerous patients have medical devices implanted or inserted within their bodies. While medical devices have significantly improved patient outcomes, as foreign objects, their wider use can lead to an increase in device-related infections, thereby imposing a burden on healthcare systems. Multiple materials with significant societal impact have evolved over time: the 19th century was the age of iron, the 20th century was dominated by silicon, and the 21st century is often referred to as the era of carbon. In particular, the development of nanocarbon materials and their potential applications in medicine are being explored, although the scope of these applications remains limited. Technological innovations in carbon materials are remarkable, and their application in medicine is expected to advance greatly. For example, diamond-like carbon (DLC) has garnered considerable attention for the development of antimicrobial surfaces. Both DLC itself and its derivatives have been reported to exhibit anti-microbial properties. This review discusses the current state of DLC-based antimicrobial surface development. en-copyright= kn-copyright= en-aut-name=FujiiYasuhiro en-aut-sei=Fujii en-aut-mei=Yasuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NakataniTatsuyuki en-aut-sei=Nakatani en-aut-mei=Tatsuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OusakaDaiki en-aut-sei=Ousaka en-aut-mei=Daiki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OozawaSusumu en-aut-sei=Oozawa en-aut-mei=Susumu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=SasaiYasushi en-aut-sei=Sasai en-aut-mei=Yasushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=KasaharaShingo en-aut-sei=Kasahara en-aut-mei=Shingo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil=Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama University kn-affil= affil-num=2 en-affil=Institute of Frontier Science and Technology, Okayama University of Science kn-affil= affil-num=3 en-affil=Department of Pharmacology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=4 en-affil=Division of Medical Safety Management, Safety Management Facility, Okayama University Hospital, Okayama University kn-affil= affil-num=5 en-affil=Department of Pharmacy, Gifu University of Medical Science kn-affil= affil-num=6 en-affil=Department of Cardiovascular Surgery, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= en-keyword=diamond-like carbon kn-keyword=diamond-like carbon en-keyword=antibacterial surface kn-keyword=antibacterial surface en-keyword=hydrophilicity kn-keyword=hydrophilicity en-keyword=ζ-potential kn-keyword=ζ-potential en-keyword=surface smoothness kn-keyword=surface smoothness en-keyword=biofilm kn-keyword=biofilm en-keyword=bacterial adhesion kn-keyword=bacterial adhesion END start-ver=1.4 cd-journal=joma no-vol=14 cd-vols= no-issue=32 article-no= start-page=23177 end-page=23183 dt-received= dt-revised= dt-accepted= dt-pub-year=2024 dt-pub=20240723 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Lead-free iron-doped Cs3Bi2Br9 perovskite with tunable properties en-subtitle= kn-subtitle= en-abstract= kn-abstract=Perovskite based on cesium bismuth bromide offers a compelling, non-toxic alternative to lead-containing counterparts in optoelectronic applications. However, its widespread usage is hindered by its wide bandgap. This study investigates a significant bandgap tunability achieved by introducing Fe doping into the inorganic, lead-free, non-toxic, and stable Cs3Bi2Br9 perovskite at varying concentrations. The materials were synthesized using a facile method, with the aim of tuning the optoelectronic properties of the perovskite materials. Characterization through techniques such as X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, energy dispersive spectroscopy (EDS), and UV-vis spectroscopy was conducted to elucidate the transformation mechanism of the doping materials. The substitution process results in a significant change in the bandgap energy, transforming from the pristine Cs3Bi2Br9 with a bandgap of 2.54 eV to 1.78 eV upon 70% Fe doping. The addition of 50% Fe in Cs3Bi2Br9 leads to the formation of the orthorhombic structure in Cs2(Bi,Fe)Br5 perovskite, while complete Fe alloying at 100% results in the phase formation of CsFeBr4 perovskite. Our findings on regulation of bandgap energy and crystal structure through B site substitution hold significant promise for applications in optoelectronics. en-copyright= kn-copyright= en-aut-name=HtunThiri en-aut-sei=Htun en-aut-mei=Thiri kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ElattarAmr en-aut-sei=Elattar en-aut-mei=Amr kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ElbohyHytham en-aut-sei=Elbohy en-aut-mei=Hytham kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TsutsumiKosei en-aut-sei=Tsutsumi en-aut-mei=Kosei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=HoriganeKazumasa en-aut-sei=Horigane en-aut-mei=Kazumasa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=NakanoChiyu en-aut-sei=Nakano en-aut-mei=Chiyu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=GuXiaoyu en-aut-sei=Gu en-aut-mei=Xiaoyu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=SuzukiHiroo en-aut-sei=Suzuki en-aut-mei=Hiroo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=NishikawaTakeshi en-aut-sei=Nishikawa en-aut-mei=Takeshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=KyawAung Ko Ko en-aut-sei=Kyaw en-aut-mei=Aung Ko Ko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=HayashiYasuhiko en-aut-sei=Hayashi en-aut-mei=Yasuhiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Department of Chemistry, Faculty of Science, Ain Shams University kn-affil= affil-num=3 en-affil=Physics Department, Faculty of Science, Damietta University kn-affil= affil-num=4 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=5 en-affil=Research Institute for Interdisciplinary Science, Okayama University kn-affil= affil-num=6 en-affil=Advanced Science Research Center, Okayama University kn-affil= affil-num=7 en-affil=Guangdong University Key Laboratory for Advanced Quantum Dot Displays and Lighting and Department of Electronic & Electrical Engineering, Southern University of Science and Technology kn-affil= affil-num=8 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=9 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=10 en-affil=Guangdong University Key Laboratory for Advanced Quantum Dot Displays and Lighting and Department of Electronic & Electrical Engineering, Southern University of Science and Technology kn-affil= affil-num=11 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2024 dt-pub=20240325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=鉄添加した底質微生物燃料電池を用いた農業排水路におけるリン内部負荷の削減 kn-title=Reduction of internal phosphorus loading in agricultural drainages using iron-incorporated sediment microbial fuel cells en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=GAMAMADA LIYANAGE ERANDI PRIYANGIKA PERERA en-aut-sei=GAMAMADA LIYANAGE ERANDI PRIYANGIKA PERERA en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2024 dt-pub=20240325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=ピリジル、イミダゾリル及びオキサゾリル基を有する非対称アジンの選択的合成と、それらを配位子として含む鉄(II)及びニッケル(II)錯体の構造及び性質に関する研究 kn-title=Studies on Selective Synthesis and Coordination Abilities of Unsymmetrical Azines with Pyridyl, Imidazolyl, and Oxazolyl Substituents and Structures and Properties of Their Iron(II) and Nickel(II) Complexes en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=KENNEDY MAWUNYA HAYIBOR en-aut-sei=KENNEDY MAWUNYA HAYIBOR en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama university kn-affil=岡山大学大学院自然科学研究科 END start-ver=1.4 cd-journal=joma no-vol=358 cd-vols= no-issue= article-no= start-page=142060 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2024 dt-pub=202406 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Size, polyglycerol grafting, and net surface charge of iron oxide nanoparticles determine their interaction and toxicity in Caenorhabditis elegans en-subtitle= kn-subtitle= en-abstract= kn-abstract=The widespread application of engineered nanoparticles (NPs) in environmental remediation has raised public concerns about their toxicity to aquatic organisms. Although appropriate surface modification can mitigate the ecotoxicity of NPs, the lack of polymer coating to inhibit toxicity completely and the insufficient knowledge about charge effect hinder the development of safe nanomaterials. Herein, we explored the potential of polyglycerol (PG) functionalization in alleviating the environmental risks of NPs. Iron oxide NPs (ION) of 20, 100, and 200 nm sizes (IONS, IONM and IONL, respectively) were grafted with PG to afford ION-PG. We examined the interaction of ION and ION-PG with Caenorhabditis elegans (C. elegans) and found that PG suppressed non-specific interaction of ION with C. elegans to reduce their accumulation and to inhibit their translocation. Particularly, IONS-PG was completely excluded from worms of all developmental stages. By covalently introducing sulfate, carboxyl and amino groups onto IONS-PG, we further demonstrated that positively charged IONS-PG-NH3+ induced high intestinal accumulation, cuticle adhesion and distal translocation, whereas the negatively charged IONS-PG-OSO3– and IONS-PG-COO– were excreted out. Consequently, no apparent deleterious effects on brood size and life span were observed in worms treated by IONS-PG and IONS-PG bearing negatively charged groups. This study presents new surface functionalization approaches for developing ecofriendly nanomaterials. en-copyright= kn-copyright= en-aut-name=ZouYajuan en-aut-sei=Zou en-aut-mei=Yajuan kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ShikanoYutaka en-aut-sei=Shikano en-aut-mei=Yutaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NishinaYuta en-aut-sei=Nishina en-aut-mei=Yuta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KomatsuNaoki en-aut-sei=Komatsu en-aut-mei=Naoki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=Kage-NakadaiEriko en-aut-sei=Kage-Nakadai en-aut-mei=Eriko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=FujiwaraMasazumi en-aut-sei=Fujiwara en-aut-mei=Masazumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Institute of Systems and Information Engineering, University of Tsukuba kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Human and Environmental Studies, Kyoto University kn-affil= affil-num=5 en-affil=Department of Nutrition, Graduate School of Human Life and Ecology, Osaka Metropolitan University kn-affil= affil-num=6 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= en-keyword=iron oxide nanoparticles kn-keyword=iron oxide nanoparticles en-keyword=polyglycerol functionalization kn-keyword=polyglycerol functionalization en-keyword=C. elegans kn-keyword=C. elegans en-keyword=accumulation kn-keyword=accumulation en-keyword=distribution kn-keyword=distribution en-keyword=toxicity kn-keyword=toxicity END start-ver=1.4 cd-journal=joma no-vol=59 cd-vols= no-issue=6 article-no= start-page=1314 end-page=1328 dt-received= dt-revised= dt-accepted= dt-pub-year=2024 dt-pub=20240310 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Wetting property of Fe‐S melt in solid core: Implication for the core crystallization process in planetesimals en-subtitle= kn-subtitle= en-abstract= kn-abstract=In differentiated planetesimals, the liquid core starts to crystallize during secular cooling, followed by the separation of liquid–solid phases in the core. The wetting property between liquid and solid iron alloys determines whether the core melts are trapped in the solid core or they can separate from the solid core during core crystallization. In this study, we performed high-pressure experiments under the conditions of the interior of small bodies (0.5–3.0 GPa) to study the wetting property (dihedral angle) between solid Fe and liquid Fe-S as a function of pressure and duration. The measured dihedral angles are approximately constant after 2 h and decrease with increasing pressure. The dihedral angles range from 30° to 48°, which are below the percolation threshold of 60° at 0.5–3.0 GPa. The oxygen content in the melt decreases with increasing pressure and there are strong positive correlations between the S + O or O content and the dihedral angle. Therefore, the change in the dihedral angle is likely controlled by the O content of the Fe-S melt, and the dihedral angle tends to decrease with decreasing O content in the Fe-S melt. Consequently, the Fe-S melt can form interconnected networks in the solid core. In the obtained range of the dihedral angle, a certain amount of the Fe-S melt can stably coexist with solid Fe, which would correspond to the “trapped melt” in iron meteorites. Excess amounts of the melt would migrate from the solid core over a long period of core crystallization in planetesimals. en-copyright= kn-copyright= en-aut-name=MatsubaraShiori en-aut-sei=Matsubara en-aut-mei=Shiori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TerasakiHidenori en-aut-sei=Terasaki en-aut-mei=Hidenori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=YoshinoTakashi en-aut-sei=Yoshino en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=UrakawaSatoru en-aut-sei=Urakawa en-aut-mei=Satoru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=YumitoriDaisuke en-aut-sei=Yumitori en-aut-mei=Daisuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Department of Earth Sciences, Graduate School of Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Department of Earth Sciences, Graduate School of Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Institute for Planetary Materials, Okayama University kn-affil= affil-num=4 en-affil=Department of Earth Sciences, Graduate School of Science and Technology, Okayama University kn-affil= affil-num=5 en-affil=Department of Earth Sciences, Graduate School of Science and Technology, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol=564 cd-vols= no-issue= article-no= start-page=121937 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2024 dt-pub=20240501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Synthesis and characterization of iron(II) complex with unsymmetrical heterocyclic (2-pyridyl)(4-imidazolyl)azine en-subtitle= kn-subtitle= en-abstract= kn-abstract=A new iron(II) complex bearing unsymmetrical azine, [Fe(HLH)2](PF6)2·H2O·MeCN (HLH = 2-pyridylmethylidenehydrazono(4-imidazolyl)methane), was synthesized exclusively by a reaction of 2-pyridine carboxaldehyde, 1H-imidazole-4-carboxaldehyde, hydrazine monohydrate and FeCl2·4H2O (in a molar ratio of 2:2:2:1) in methanol, followed by the addition of an aqueous NH4PF6 solution. It was characterized using spectroscopic techniques, elemental analysis, magnetic measurement, and cyclic voltammetry. The molecular and crystal structure of the compound was revealed by X-ray analysis, where an iron(II) ion was surrounded by two HLH azines with a planar E(py),Z(im) conformation, and tridentate κ3N,N’,N” coordination mode, forming a monomeric six-coordinated and diamagnetic complex. The complex cations were linked by water molecules via intermolecular hydrogen-bonding interactions between the imidazole N−H and the neighboring uncoordinated azine-N atom, forming a 1D chain structure. The selective formation of this unsymmetrical azine (HLH) from a stoichiometric mixture of the components would result from the steric preference of the five- and six-membered chelate rings by the 2-pyridyl and 4-imidazolyl azine moieties, respectively, with the E(py),Z(im) configuration. en-copyright= kn-copyright= en-aut-name=HayiborKennedy Mawunya en-aut-sei=Hayibor en-aut-mei=Kennedy Mawunya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SunatsukiYukinari en-aut-sei=Sunatsuki en-aut-mei=Yukinari kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SuzukiTakayoshi en-aut-sei=Suzuki en-aut-mei=Takayoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil= affil-num=3 en-affil= kn-affil= en-keyword=(Pyridyl)(imidazolyl)azine kn-keyword=(Pyridyl)(imidazolyl)azine en-keyword=Aldazines kn-keyword=Aldazines en-keyword=Iron(II) complex kn-keyword=Iron(II) complex en-keyword=Crystal structure kn-keyword=Crystal structure END start-ver=1.4 cd-journal=joma no-vol=15 cd-vols= no-issue= article-no= start-page=1338669 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2024 dt-pub=20240129 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Tetrathionate hydrolase from the acidophilic microorganisms en-subtitle= kn-subtitle= en-abstract= kn-abstract=Tetrathionate hydrolase (TTH) is a unique enzyme found in acidophilic sulfur-oxidizing microorganisms, such as bacteria and archaea. This enzyme catalyzes the hydrolysis of tetrathionate to thiosulfate, elemental sulfur, and sulfate. It is also involved in dissimilatory sulfur oxidation metabolism, the S-4-intermediate pathway. TTHs have been purified and characterized from acidophilic autotrophic sulfur-oxidizing microorganisms. All purified TTHs show an optimum pH in the acidic range, suggesting that they are localized in the periplasmic space or outer membrane. In particular, the gene encoding TTH from Acidithiobacillus ferrooxidans (Af-tth) was identified and recombinantly expressed in Escherichia coli cells. TTH activity could be recovered from the recombinant inclusion bodies by acid refolding treatment for crystallization. The mechanism of tetrathionate hydrolysis was then elucidated by X-ray crystal structure analysis. Af-tth is highly expressed in tetrathionate-grown cells but not in iron-grown cells. These unique structural properties, reaction mechanisms, gene expression, and regulatory mechanisms are discussed in this review. en-copyright= kn-copyright= en-aut-name=KanaoTadayoshi en-aut-sei=Kanao en-aut-mei=Tadayoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil=Department of Agricultural and Biological Chemistry, Graduate School of Environment, Life, Natural Science, and Technology, Okayama University kn-affil= en-keyword=tetrathionate hydrolase kn-keyword=tetrathionate hydrolase en-keyword=reduced inorganic sulfur compounds kn-keyword=reduced inorganic sulfur compounds en-keyword=dissimilatory sulfur metabolism kn-keyword=dissimilatory sulfur metabolism en-keyword=S4-intermediate pathway kn-keyword=S4-intermediate pathway en-keyword=acidophiles kn-keyword=acidophiles en-keyword=chemoautotroph kn-keyword=chemoautotroph END start-ver=1.4 cd-journal=joma no-vol=12 cd-vols= no-issue=11 article-no= start-page=1562 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2023 dt-pub=20231024 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Novel Iron Chelators, Super-Polyphenols, Show Antimicrobial Effects against Cariogenic Streptococcus mutans en-subtitle= kn-subtitle= en-abstract= kn-abstract=Dental caries are an oral infectious disease that can affect human health both orally and systemically. It remains an urgent issue to establish a novel antibacterial method to prevent oral infection for a healthy life expectancy. The aim of this study was to evaluate the inhibitory effects of novel iron chelators, super-polyphenols (SPs), on the cariogenic bacterium Streptococcus mutans, in vitro. SPs were developed to reduce the side effects of iron chelation therapy and were either water-soluble or insoluble depending on their isoforms. We found that SP6 and SP10 inhibited bacterial growth equivalent to povidone-iodine, and viability tests indicated that their effects were bacteriostatic. These results suggest that SP6 and SP10 have the potential to control oral bacterial infections such as Streptococcus mutans. en-copyright= kn-copyright= en-aut-name=Shinoda-ItoYuki en-aut-sei=Shinoda-Ito en-aut-mei=Yuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OmoriKazuhiro en-aut-sei=Omori en-aut-mei=Kazuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ItoTakashi en-aut-sei=Ito en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NakayamaMasaaki en-aut-sei=Nakayama en-aut-mei=Masaaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=IkedaAtsushi en-aut-sei=Ikeda en-aut-mei=Atsushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=ItoMasahiro en-aut-sei=Ito en-aut-mei=Masahiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=OharaToshiaki en-aut-sei=Ohara en-aut-mei=Toshiaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=TakashibaShogo en-aut-sei=Takashiba en-aut-mei=Shogo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= affil-num=1 en-affil=Department of Pathophysiology-Periodontal Science, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=2 en-affil=Department of Pathophysiology-Periodontal Science, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=3 en-affil=Center for Innovative Clinical Medicine, Okayama University Hospital kn-affil= affil-num=4 en-affil=Department of Oral Microbiology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=5 en-affil=Department of Periodontics & Endodontics, Division of Dentistry, Okayama University Hospital kn-affil= affil-num=6 en-affil=Department of Pathophysiology-Periodontal Science, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=7 en-affil=Department of Pathology and Experimental Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=8 en-affil=Department of Pathophysiology-Periodontal Science, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= en-keyword=antimicrobial kn-keyword=antimicrobial en-keyword=iron chelator kn-keyword=iron chelator en-keyword=oral infection kn-keyword=oral infection en-keyword=Streptococcus mutans kn-keyword=Streptococcus mutans en-keyword=super-polyphenols kn-keyword=super-polyphenols END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2023 dt-pub=20230925 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=高転移性トリプルネガティブ乳癌細胞では鉄代謝が制限され、鉄キレート剤の治療標的となり得る kn-title=Highly Metastatic Subpopulation of TNBC Cells Has Limited Iron Metabolism and Is a Target of Iron Chelators en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=WANGYUZE en-aut-sei=WANG en-aut-mei=YUZE kn-aut-name=王宇沢 kn-aut-sei=王 kn-aut-mei=宇沢 aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil=岡山大学大学院医歯薬学総合研究科 END start-ver=1.4 cd-journal=joma no-vol=2022 cd-vols= no-issue= article-no= start-page=9776388 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220831 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Transtibial Pullout Repair of Lateral Meniscus Posterior Root Tear with Tissue Loss: A Case with Anterior Cruciate Ligament Injury and Medial Meniscus Tear en-subtitle= kn-subtitle= en-abstract= kn-abstract=Lateral meniscus (LM) posterior root tear (LMPRT) is mainly caused by trauma, especially trauma associated with anterior cruciate ligament (ACL) injuries. Although a transtibial pullout repair or a side-to-side repair is commonly performed for LMPRT, to the best of our knowledge, there is no clinical report of LMPRT with tissue loss using the pullout technique. Thus, the purpose of this report was to describe a clinical, radiographic, and arthroscopic outcome after pullout repair for a case of LMPRT with a large defect with a chronic ACL tear and complex medial meniscus (MM) tears. A 31-year-old man complained of knee pain and restricted range of motion after twisting his knee when he stepped on an iron pipe. The patient had a football-related injury to his right knee 14 years before presentation, and since then, the patient's knee has given out more than 10 times but was left unassessed. Magnetic resonance imaging showed LMPRT with tissue loss, ACL tears, and complex MM tears. Transtibial pullout repair of the LMPRT with ACL reconstruction and MM repairs were performed. Following the pullout repair of the LMPRT, an approximately 6 mm gap remained between the LM posterior root and root insertion. However, magnetic resonance imaging and second-look arthroscopy at 1 year postoperatively revealed meniscal healing, gap filling with some regeneration tissue, of the LM posterior root. Furthermore, the lateral meniscus extrusion in the coronal plane improved from 3.1 mm (preoperative) to 1.6 mm (1 year postoperatively). Transtibial pullout repair with the remaining gap could be a viable treatment option for LMPRT with tissue loss, combined with ACL reconstruction. en-copyright= kn-copyright= en-aut-name=TamuraMasanori en-aut-sei=Tamura en-aut-mei=Masanori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=FurumatsuTakayuki en-aut-sei=Furumatsu en-aut-mei=Takayuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HiranakaTakaaki en-aut-sei=Hiranaka en-aut-mei=Takaaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KintakaKeisuke en-aut-sei=Kintaka en-aut-mei=Keisuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=HigashiharaNaohiro en-aut-sei=Higashihara en-aut-mei=Naohiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=KamatsukiYusuke en-aut-sei=Kamatsuki en-aut-mei=Yusuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=NakataEiji en-aut-sei=Nakata en-aut-mei=Eiji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=OzakiToshifumi en-aut-sei=Ozaki en-aut-mei=Toshifumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= affil-num=1 en-affil=Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=3 en-affil=Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=4 en-affil=Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=5 en-affil=Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=6 en-affil=Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=7 en-affil=Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=8 en-affil=Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= END start-ver=1.4 cd-journal=joma no-vol=8 cd-vols= no-issue=12 article-no= start-page=11213 end-page=11219 dt-received= dt-revised= dt-accepted= dt-pub-year=2023 dt-pub=20230317 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Development of Pipetteless Paper-Based Analytical Devices with a Volume Gauge en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this work, we propose a new design for paper based analytical devices (PADs) that eliminate the need to use a micropipette for sample introduction. With this design, a PAD is equipped with a distance-based detection channel that is connected to a storage channel that indicates the volume of a sample introduced into the PAD. The analyte in the sample solution reacts with a colorimetric reagent deposited into the distance-based detection channel as the sample solution flows into the storage channel where the volume is measured. The ratio of the lengths of the detection channel and that of the storage channel (D/S ratio) are constant for a sample containing a certain concentration, which is independent of the introduced volume. Therefore, the PADs permit volume-independent quantification using a dropper instead of a micropipette because the length of the storage channel plays the role of a volume gauge to estimate the introduced sample volume. In this study, the D/S ratios obtained with a dropper were comparable to those obtained with a micropipette, which confirmed that precise volume control is unnecessary for this PAD system. The proposed PADs were applied to the determinations of iron and bovine serum albumin using bathophenanthroline and tetrabromophenol blue as colorimetric reagents, respectively. The calibration curves showed good linear relationships with coefficients of 0.989 for iron and 0.994 for bovine serum albumin, respectively. en-copyright= kn-copyright= en-aut-name=DanchanaKaewta en-aut-sei=Danchana en-aut-mei=Kaewta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=IwasakiHiroshi en-aut-sei=Iwasaki en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ThayawutthikunYada en-aut-sei=Thayawutthikun en-aut-mei=Yada kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SaetearPhoonthawee en-aut-sei=Saetear en-aut-mei=Phoonthawee kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KanetaTakashi en-aut-sei=Kaneta en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Department of Chemistry, Okayama University kn-affil= affil-num=2 en-affil=Department of Chemistry, Okayama University kn-affil= affil-num=3 en-affil=Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs), Mahidol University kn-affil= affil-num=4 en-affil=Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs), Mahidol University kn-affil= affil-num=5 en-affil=Department of Chemistry, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol=14 cd-vols= no-issue=1 article-no= start-page=920 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2023 dt-pub=20230217 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Structure of a monomeric photosystem I core associated with iron-stress-induced-A proteins from Anabaena sp. PCC 7120 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Iron-stress-induced-A proteins (IsiAs) are expressed in cyanobacteria under iron-deficient conditions. The cyanobacterium Anabaena sp. PCC 7120 has four isiA genes; however, their binding property and functional roles in PSI are still missing. We analyzed a cryo-electron microscopy structure of a PSI-IsiA supercomplex isolated from Anabaena grown under an iron-deficient condition. The PSI-IsiA structure contains six IsiA subunits associated with the PsaA side of a PSI core monomer. Three of the six IsiA subunits were identified as IsiA1 and IsiA2. The PSI-IsiA structure lacks a PsaL subunit; instead, a C-terminal domain of IsiA2 occupies the position of PsaL, which inhibits the oligomerization of PSI, leading to the formation of a PSI monomer. Furthermore, excitation-energy transfer from IsiAs to PSI appeared with a time constant of 55 ps. These findings provide insights into both the molecular assembly of the Anabaena IsiA family and the functional roles of IsiAs. en-copyright= kn-copyright= en-aut-name=NagaoRyo en-aut-sei=Nagao en-aut-mei=Ryo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KatoKoji en-aut-sei=Kato en-aut-mei=Koji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HamaguchiTasuku en-aut-sei=Hamaguchi en-aut-mei=Tasuku kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=UenoYoshifumi en-aut-sei=Ueno en-aut-mei=Yoshifumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TsuboshitaNaoki en-aut-sei=Tsuboshita en-aut-mei=Naoki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=ShimizuShota en-aut-sei=Shimizu en-aut-mei=Shota kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=FurutaniMiyu en-aut-sei=Furutani en-aut-mei=Miyu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=EhiraShigeki en-aut-sei=Ehira en-aut-mei=Shigeki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=NakajimaYoshiki en-aut-sei=Nakajima en-aut-mei=Yoshiki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=KawakamiKeisuke en-aut-sei=Kawakami en-aut-mei=Keisuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=SuzukiTakehiro en-aut-sei=Suzuki en-aut-mei=Takehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= en-aut-name=DohmaeNaoshi en-aut-sei=Dohmae en-aut-mei=Naoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=12 ORCID= en-aut-name=AkimotoSeiji en-aut-sei=Akimoto en-aut-mei=Seiji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=13 ORCID= en-aut-name=YonekuraKoji en-aut-sei=Yonekura en-aut-mei=Koji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=14 ORCID= en-aut-name=ShenJian-Ren en-aut-sei=Shen en-aut-mei=Jian-Ren kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=15 ORCID= affil-num=1 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Biostructural Mechanism Laboratory, RIKEN SPring-8 Center kn-affil= affil-num=4 en-affil=Graduate School of Science, Kobe University kn-affil= affil-num=5 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=6 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=7 en-affil=Graduate School of Science, Kobe University kn-affil= affil-num=8 en-affil=Department of Biological Sciences, Graduate School of Science, Tokyo Metropolitan University kn-affil= affil-num=9 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=10 en-affil=Biostructural Mechanism Laboratory, RIKEN SPring-8 Center kn-affil= affil-num=11 en-affil=Biomolecular Characterization Unit, RIKEN Center for Sustainable Resource Science kn-affil= affil-num=12 en-affil=Biomolecular Characterization Unit, RIKEN Center for Sustainable Resource Science kn-affil= affil-num=13 en-affil=Graduate School of Science, Kobe University kn-affil= affil-num=14 en-affil= Biostructural Mechanism Laboratory, RIKEN SPring-8 Center kn-affil= affil-num=15 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2023 dt-pub=20230324 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=中央アナトリアにおける初期の鉄生産への取組：カマン・カレホユック（トルコ）において出土する青銅器時代の鉄分を多く含む石材、スラグ、金属製遺物の地球化学的解析 kn-title=Early Efforts for Iron Production in Central Anatolia: Geochemical Analysis of Iron-rich Stones, Slags and Metal Objects from the Bronze Age in Kaman-Kalehöyük (Turkey) en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=KUCUKARSLAN NURCAN en-aut-sei=KUCUKARSLAN NURCAN en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama university kn-affil=岡山大学大学院自然科学研究科 END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2023 dt-pub=20230324 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=密度汎関数理論およびスピンゆらぎの理論に基づく鉄系・有機系超伝導体の研究 kn-title=Density functional and spin fluctuation theory based study for iron-based and organic superconductors en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=SHIMIZUMakoto en-aut-sei=SHIMIZU en-aut-mei=Makoto kn-aut-name=清水真 kn-aut-sei=清水 kn-aut-mei=真 aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama university kn-affil=岡山大学大学院自然科学研究科 END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue=1 article-no= start-page=19 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2023 dt-pub=20230508 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An investigation of the internal morphology of asbestos ferruginous bodies: constraining their role in the onset of malignant mesothelioma en-subtitle= kn-subtitle= en-abstract= kn-abstract=Background　Asbestos is a fibrous mineral that was widely used in the past. However, asbestos inhalation is associated with an aggressive type of cancer known as malignant mesothelioma (MM). After inhalation, an iron-rich coat forms around the asbestos fibres, together the coat and fibre are termed an "asbestos ferruginous body" (AFB). AFBs are the main features associated with asbestos-induced MM. Whilst several studies have investigated the external morphology of AFBs, none have characterised the internal morphology. Here, cross-sections of multiple AFBs from two smokers and two non-smokers are compared to investigate the effects of smoking on the onset and growth of AFBs. Morphological and chemical observations of AFBs were undertaken by transmission electron microscopy, energy dispersive x-ray spectroscopy and selected area diffraction.
Results　The AFBs of all patients were composed of concentric layers of 2-line or 6-line ferrihydrite, with small spherical features being observed on the outside of the AFBs and within the cross-sections. The spherical components are of a similar size to Fe-rich inclusions found within macrophages from mice injected with asbestos fibres in a previous study. As such, the spherical components composing the AFBs may result from the deposition of Fe-rich inclusions during frustrated phagocytosis. The AFBs were also variable in terms of their Fe, P and Ca abundances, with some layers recording higher Fe concentrations (dense layers), whilst others lower Fe concentrations (porous layers). Furthermore, smokers were found to have smaller and overall denser AFBs than non-smokers.
Conclusions　The AFBs of smokers and non-smokers show differences in their morphology, indicating they grew in lung environments that experienced disparate conditions. Both the asbestos fibres of smokers and non-smokers were likely subjected to frustrated phagocytosis and accreted mucopolysaccharides, resulting in Fe accumulation and AFB formation. However, smokers' AFBs experienced a more uniform Fe-supply within the lung environment compared to non-smokers, likely due to Fe complexation from cigarette smoke, yielding denser, smaller and more Fe-rich AFBs. Moreover, the lack of any non-ferrihydrite Fe phases in the AFBs may indicate that the ferritin shell was intact, and that ROS may not be the main driver for the onset of MM. en-copyright= kn-copyright= en-aut-name=AvramescuMaya-Liliana en-aut-sei=Avramescu en-aut-mei=Maya-Liliana kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=PotiszilChristian en-aut-sei=Potiszil en-aut-mei=Christian kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KunihiroTak en-aut-sei=Kunihiro en-aut-mei=Tak kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OkabeKazunori en-aut-sei=Okabe en-aut-mei=Kazunori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=NakamuraEizo en-aut-sei=Nakamura en-aut-mei=Eizo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University kn-affil= affil-num=2 en-affil=The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University kn-affil= affil-num=3 en-affil=The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University kn-affil= affil-num=4 en-affil=Bell Land General Hospital kn-affil= affil-num=5 en-affil=The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University kn-affil= en-keyword=Asbestos fibre kn-keyword=Asbestos fibre en-keyword=Asbestos body kn-keyword=Asbestos body en-keyword=Malignant mesothelioma kn-keyword=Malignant mesothelioma en-keyword=Asbestos body internal morphology kn-keyword=Asbestos body internal morphology END start-ver=1.4 cd-journal=joma no-vol=61 cd-vols= no-issue=6 article-no= start-page=1775 end-page=1783 dt-received= dt-revised= dt-accepted= dt-pub-year=2021 dt-pub=20210615 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Impeller and Gas Stirring on Agglomeration Behavior of Polydisperse Fine Particles in Liquid en-subtitle= kn-subtitle= en-abstract= kn-abstract=Agglomeration, coalescence and flotation of non-metallic inclusions in steel melt are effective for obtaining “clean steel.” In this study, the agglomeration and breakup behaviors of particles with a primary particle size distribution (hereinafter, polydisperse particles) in a liquid under impeller and gas stirring were compared by numerical calculations and model experiments. The particle-size-grouping (PSG) method in the numerical agglomeration model of particles was combined with a breakup term of agglomeration due to bubble bursting at the free surface. Polydisperse and monodisperse polymethylmethacrylate (PMMA) particles were used in the agglomeration experiments. The agglomeration rate of the polydisperse particles under impeller stirring was increased by an increasing energy input rate, whereas the agglomeration rate under gas stirring decreased under this condition due to the larger contribution of the breakup of agglomerated particles during bubble bursting in gas stirring. At the same energy input rate, agglomeration of polydisperse particles was larger under impeller stirring than under gas stirring. The agglomeration rate of polydisperse particles was larger than that of monodisperse particles under both impeller and gas stirring at the same energy input rate. The computational temporal changes in the total number of particles were in good agreement with the experimental results. This means that the difference in the agglomeration behaviors observed in impeller and gas stirring can be explained by the turbulent coagulation and subsequent agglomerated particle breakup in gas stirring. The computational temporal change in the number of each group approximately agreed with the experimental change in both impeller and gas stirring. en-copyright= kn-copyright= en-aut-name=YamaguchiAkito en-aut-sei=Yamaguchi en-aut-mei=Akito kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OkanoHitoshi en-aut-sei=Okano en-aut-mei=Hitoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SumitomoSyunsuke en-aut-sei=Sumitomo en-aut-mei=Syunsuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=UddinMd. Azhar en-aut-sei=Uddin en-aut-mei=Md. Azhar kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KatoYoshiei en-aut-sei=Kato en-aut-mei=Yoshiei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=2 en-affil=Department of Material and Energy Science, Graduate School of Environmental Science kn-affil= affil-num=3 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=4 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=5 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= en-keyword=agglomeration kn-keyword=agglomeration en-keyword=breakup kn-keyword=breakup en-keyword=particle kn-keyword=particle en-keyword=impeller stirring kn-keyword=impeller stirring en-keyword=gas agitation kn-keyword=gas agitation en-keyword=particle-size-grouping method kn-keyword=particle-size-grouping method END start-ver=1.4 cd-journal=joma no-vol=127 cd-vols= no-issue=5 article-no= start-page=2223 end-page=2230 dt-received= dt-revised= dt-accepted= dt-pub-year=2023 dt-pub=20230124 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Uniform Formation of a Characteristic Nanocomposite Structure of Biogenous Iron Oxide for High Rate Performance as the Anode of Lithium-Ion Batteries en-subtitle= kn-subtitle= en-abstract= kn-abstract=Recently, Fe2O3 has been considered as an alternative anode material for lithium-ion batteries (LIBs) owing to its high theoretical capacity (approximately 1000 mA h g-1), low cost, and nontoxicity. However, its rate performance remains poor relative to that of the conventional graphite anode. In this study, Fe2O3-based anodes were prepared through the annealing of biogenous Fe2O3 (L-BIOX) samples produced by an aquatic Fe-oxidizing bacterium. The effect of the annealing temperature on the performance of the synthesized Fe2O3-based material as the anode of an LIB was investigated. Electrochemical measurements revealed that the annealed L-BIOX samples at 300-700 degrees C exhibited higher rate performances than the unannealed material. Particularly, the sample annealed at 700 degrees C exhibited the highest capacity among the synthesized materials and showed a higher performance than the previously reported Fe2O3-based anodes. It exhibited a capacity of 923 mA h g-1 even at a high current density of 2 A g-1. After annealing at 700 degrees C and discharging, the synthesized biogenous material had a uniform nanocomposite structure composed of alpha-Fe2O3 nanoparticles dispersed in an amorphous matrix of Li-Si-P oxide. To form this uniform nanostructure, the solid-state diffusion resistance of the Li+ ions in the active material was reduced, which consequently improved the rate performance of the electrode. Therefore, this study provides substantial insights into the development and improvement of the performance of novel Fe2O3-based nanomaterials as the anode of LIBs. en-copyright= kn-copyright= en-aut-name=TakahashiMasakuni en-aut-sei=Takahashi en-aut-mei=Masakuni kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SakumaRyo en-aut-sei=Sakuma en-aut-mei=Ryo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HashimotoHideki en-aut-sei=Hashimoto en-aut-mei=Hideki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=FujiiTatsuo en-aut-sei=Fujii en-aut-mei=Tatsuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TakadaJun en-aut-sei=Takada en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=5 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol=11 cd-vols= no-issue= article-no= start-page=2848 end-page=2862 dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20221228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Novel Rotor Structure Employing Large Flux Barrier and Disproportional Airgap for Enhancing Efficiency of IPMSM Adopting Concentrated Winding Structure en-subtitle= kn-subtitle= en-abstract= kn-abstract=Interior permanent magnetic synchronous motors (IPMSMs) adopting concentrated windings have been widely used in industrial applications. To reduce operating costs, it is an important issue to enhance the efficiency of an IPMSM as much as possible while maintaining manufacturing costs. In general, an IPMSM used for an industrial application always operates in a specific operating area according to the required load. Therefore, this paper has two purposes. The first purpose is to propose a novel rotor structure which can enhance efficiency at the target wide-speed middle-torque operating area without additional manufacturing costs. The second purpose is to clarify the design method for a suitable rotor structure depending on its target operating area. Reducing losses is the key to enhancing efficiency. This paper first examines the effects of adopting large flux barriers and a disproportional airgap on copper and iron losses, and clarifies their merits and respective high-efficiency operating areas. Furthermore, to take advantage of the two rotor structures, a novel rotor structure which employs both large flux barriers and a disproportional airgap has been proposed. 2D-FEM (Finite-Element Method) is used for discussion first, and a prototype machine is manufactured to verify the 2D-FEM results. Both 2D-FEM and experimental results show that the proposed rotor structure can enhance the efficiency of an IPMSM most effectively at the target operating area. Moreover, for a low-speed high-torque operating area, adopting only large flux barriers is most suitable. And for a high-speed low-torque operating area, adopting only a disproportional airgap is most suitable. en-copyright= kn-copyright= en-aut-name=TaoXianji en-aut-sei=Tao en-aut-mei=Xianji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakemotoMasatsugu en-aut-sei=Takemoto en-aut-mei=Masatsugu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TsunataRen en-aut-sei=Tsunata en-aut-mei=Ren kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OgasawaraSatoshi en-aut-sei=Ogasawara en-aut-mei=Satoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil=Graduate School of Information and Technology, Hokkaido University kn-affil= affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Information and Technology, Hokkaido University kn-affil= en-keyword=Rotors kn-keyword=Rotors en-keyword=Magnetic flux kn-keyword=Magnetic flux en-keyword=Atmospheric modeling kn-keyword=Atmospheric modeling en-keyword=Torque kn-keyword=Torque en-keyword=Iron kn-keyword=Iron en-keyword=Copper kn-keyword=Copper en-keyword=Costs kn-keyword=Costs en-keyword=IPMSM kn-keyword=IPMSM en-keyword=concentrated winding structure kn-keyword=concentrated winding structure en-keyword=high efficiency kn-keyword=high efficiency en-keyword=flux barrier kn-keyword=flux barrier en-keyword=disproportional airgap kn-keyword=disproportional airgap END start-ver=1.4 cd-journal=joma no-vol=15 cd-vols= no-issue=2 article-no= start-page=468 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2023 dt-pub=20230112 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Highly Metastatic Subpopulation of TNBC Cells Has Limited Iron Metabolism and Is a Target of Iron Chelators en-subtitle= kn-subtitle= en-abstract= kn-abstract=Simple Summary Excess iron is known to be a risk factor of carcinogenesis. Although iron chelators show anti-cancer effects, they have not been used successfully to treat cancer patients. Triple-negative breast cancer (TNBC) is a disease with poor prognosis without effective treatments. Thus, we aimed to evaluate the possibility of iron chelators as a therapy for TNBC. Deferasirox (DFX), an iron chelator, suppressed the growth of 4T1 murine TNBC cell line cells in vitro and in vivo lung metastatic model. We found that highly metastatic TNBC cells have limited iron metabolism and can be more effectively targeted by iron chelators. Excess iron is known to be a risk factor of carcinogenesis. Although iron chelators show anti-cancer effects, they have not been used successfully to treat cancer patients. Triple-negative breast cancer (TNBC) is a disease with poor prognosis without effective treatments. Thus, we aimed to evaluate a possibility of iron chelators as a therapy for TNBC. Deferasirox (DFX), an iron chelator, suppressed the growth of 4T1 murine TNBC cell line cells in vitro and in vivo. Lung metastasis was further significantly reduced, leading to the hypothesis that iron metabolism between metastatic and non-metastatic cells may be different. An analysis of existing database demonstrated that the expression of iron-uptake genes was significantly suppressed in TNBC cells that metastasized to lymph nodes or lungs compared to those in primary tumors. A highly metastatic clone of the murine 4T1 TNBC cells (4T1-HM) did not proliferate well under iron-rich or iron-depleted conditions by iron chelators compared to a low-metastatic clone (4T1-LM). Bulk RNA-seq analysis of RNA from 4T1-HM and 4T1-LM cells suggested that the PI3K-AKT pathway might be responsible for this difference. Indeed, DFX suppressed the proliferation via the AKT-mTOR pathway in 4T1-HM and the human MDA-MB-231 cells, a human mesenchymal-like TNBC cell line. DFX also suppressed the growth of 4T1-HM tumors in comparison to 4T1-LM tumors, and reduced lung metastases after surgical resection of primary 4T1 tumors. These results indicated, for the first time, that highly metastatic TNBC cells have limited iron metabolism, and they can be more effectively targeted by iron chelators. en-copyright= kn-copyright= en-aut-name=WangYuze en-aut-sei=Wang en-aut-mei=Yuze kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OharaToshiaki en-aut-sei=Ohara en-aut-mei=Toshiaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ChenYuehua en-aut-sei=Chen en-aut-mei=Yuehua kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=HamadaYusuke en-aut-sei=Hamada en-aut-mei=Yusuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=LiChunning en-aut-sei=Li en-aut-mei=Chunning kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=FujisawaMasayoshi en-aut-sei=Fujisawa en-aut-mei=Masayoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=YoshimuraTeizo en-aut-sei=Yoshimura en-aut-mei=Teizo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=MatsukawaAkihiro en-aut-sei=Matsukawa en-aut-mei=Akihiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= affil-num=1 en-affil=Department of Pathology and Experimental Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=2 en-affil=Department of Pathology and Experimental Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=3 en-affil=Department of Pathology and Experimental Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=4 en-affil=Department of Pathology and Experimental Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=5 en-affil=Department of Pathology and Experimental Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=6 en-affil=Department of Pathology and Experimental Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=7 en-affil=Department of Pathology and Experimental Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=8 en-affil=Department of Pathology and Experimental Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= en-keyword=triple-negative breast cancer kn-keyword=triple-negative breast cancer en-keyword=iron metabolism kn-keyword=iron metabolism en-keyword=iron chelator kn-keyword=iron chelator en-keyword=phosphoinositide-3-kinase-protein kinase kn-keyword=phosphoinositide-3-kinase-protein kinase en-keyword=heterogeneity kn-keyword=heterogeneity en-keyword=metastasis kn-keyword=metastasis END start-ver=1.4 cd-journal=joma no-vol=23 cd-vols= no-issue=1 article-no= start-page=380 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20221229 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Thickness Measurement at High Lift-Off for Underwater Corroded Iron-Steel Structures Using a Magnetic Sensor Probe en-subtitle= kn-subtitle= en-abstract= kn-abstract=Infrastructure facilities that were built approximately half a century ago have rapidly aged. Steel sheet piles, the inspection object in this study, are severely corroded, resulting in cave-in damages at wharfs. To solve such a problem, non-destructive inspection techniques are required. We previously demonstrated plate thickness measurement using extremely low-frequency eddy current testing. However, when the steel sheet piles are located in water, shellfish adhere to their surface, causing a lift-off of several tens of millimeters. Therefore, this large lift-off hinders the thickness measurement owing to fluctuations of magnetic signals. In this study, sensor probes with different coil diameters were prototyped and the optimum size for measuring steel sheet piles at high lift-off was investigated. Using the probes, the magnetic field was applied with a lift-off range from 0 to 80 mm, and the intensity and phase of the detected magnetic field were analyzed. Subsequently, by increasing the probe diameter, a good sensitivity was obtained for the thickness estimation with a lift-off of up to 60 mm. Moreover, these probes were used to measure the thickness of actual steel sheet piles, and measurements were successfully obtained at a high lift-off. en-copyright= kn-copyright= en-aut-name=AdachiShoya en-aut-sei=Adachi en-aut-mei=Shoya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=HayashiMinoru en-aut-sei=Hayashi en-aut-mei=Minoru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KawakamiTaisei en-aut-sei=Kawakami en-aut-mei=Taisei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=AndoYuto en-aut-sei=Ando en-aut-mei=Yuto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=WangJin en-aut-sei=Wang en-aut-mei=Jin kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=SakaiKenji en-aut-sei=Sakai en-aut-mei=Kenji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=KiwaToshihiko en-aut-sei=Kiwa en-aut-mei=Toshihiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=IshikawaToshiyuki en-aut-sei=Ishikawa en-aut-mei=Toshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=TsukadaKeiji en-aut-sei=Tsukada en-aut-mei=Keiji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= affil-num=1 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=5 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=6 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=7 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=8 en-affil=Department of Civil, Environmental and Applied System Engineering, Faculty of Environmental and Urban Engineering, Kansai University kn-affil= affil-num=9 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= en-keyword=eddy current testing kn-keyword=eddy current testing en-keyword=high lift-off thickness measurement kn-keyword=high lift-off thickness measurement en-keyword=magnetic sensor kn-keyword=magnetic sensor en-keyword=corrosion kn-keyword=corrosion en-keyword=underwater steel structure kn-keyword=underwater steel structure END start-ver=1.4 cd-journal=joma no-vol=22 cd-vols= no-issue=1 article-no= start-page=622 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20221029 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Neonatal hemochromatosis with epsilon gamma delta beta-thalassemia: a case report and analysis of serum iron regulators en-subtitle= kn-subtitle= en-abstract= kn-abstract=Background Neonatal hemochromatosis causes acute liver failure during the neonatal period, mostly due to gestational alloimmune liver disease (GALD). Thalassemia causes hemolytic anemia and ineffective erythropoiesis due to mutations in the globin gene. Although neonatal hemochromatosis and thalassemia have completely different causes, the coexistence of these diseases can synergistically exacerbate iron overload. We report that a newborn with epsilon gamma delta beta-thalassemia developed neonatal hemochromatosis, which did not respond to iron chelators and rapidly worsened, requiring living-donor liver transplantation. Case presentation A 1-day-old Japanese boy with hemolytic anemia and targeted red blood cells was diagnosed with epsilon gamma delta beta-thalassemia by genetic testing, and required frequent red blood cell transfusions. At 2 months after birth, exacerbation of jaundice, grayish-white stool, and high serum ferritin levels were observed, and liver biopsy showed iron deposition in hepatocytes and Kupffer cells. Magnetic resonance imaging scans showed findings suggestive of iron deposits in the liver, spleen, pancreas, and bone marrow. The total amount of red blood cell transfusions administered did not meet the criteria for post-transfusion iron overload. Administration of an iron-chelating agent was initiated, but iron overload rapidly progressed to liver failure without improvement in jaundice and liver damage. He underwent living-donor liver transplantation from his mother, after which iron overload disappeared, and no recurrence of iron overload was observed. Immunohistochemical staining for C5b-9 in the liver was positive. Serum hepcidin levels were low and serum growth differentiation factor-15 levels were high prior to living-donor liver transplantation. Conclusions We reported that an infant with epsilon gamma delta beta-thalassemia developed NH due to GALD, and that coexistence of ineffective erythropoiesis in addition to erythrocyte transfusions may have exacerbated iron overload. Low serum hepcidin levels, in this case, might have been caused by decreased hepcidin production arising from fetal liver damage due to neonatal hemochromatosis and increased hepcidin-inhibiting hematopoietic mediators due to the ineffective hematopoiesis observed in thalassemia. en-copyright= kn-copyright= en-aut-name=TsugeMitsuru en-aut-sei=Tsuge en-aut-mei=Mitsuru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KoderaAya en-aut-sei=Kodera en-aut-mei=Aya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SumitomoHiromi en-aut-sei=Sumitomo en-aut-mei=Hiromi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=ArakiTooru en-aut-sei=Araki en-aut-mei=Tooru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=YoshidaRyuichi en-aut-sei=Yoshida en-aut-mei=Ryuichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=YasuiKazuya en-aut-sei=Yasui en-aut-mei=Kazuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=SatoHiroki en-aut-sei=Sato en-aut-mei=Hiroki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=WashioYosuke en-aut-sei=Washio en-aut-mei=Yosuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=WashioKana en-aut-sei=Washio en-aut-mei=Kana kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=ShigeharaKenji en-aut-sei=Shigehara en-aut-mei=Kenji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=YashiroMasato en-aut-sei=Yashiro en-aut-mei=Masato kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= en-aut-name=YagiTakahito en-aut-sei=Yagi en-aut-mei=Takahito kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=12 ORCID= en-aut-name=TsukaharaHirokazu en-aut-sei=Tsukahara en-aut-mei=Hirokazu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=13 ORCID= affil-num=1 en-affil=Department of Pediatric Acute Disease, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Department of Pediatrics, Fukuyama City Hospital kn-affil= affil-num=3 en-affil=Department of Pediatrics, Matsuyama Red Cross Hospital kn-affil= affil-num=4 en-affil=Department of Pediatrics, National Hospital Organization Fukuyama Medical Center kn-affil= affil-num=5 en-affil=Department of Gastroenterological Surgery, Okayama University Hospital kn-affil= affil-num=6 en-affil=Department of Gastroenterological Surgery, Okayama University Hospital kn-affil= affil-num=7 en-affil=Department of Gastroenterological Surgery, Okayama University Hospital kn-affil= affil-num=8 en-affil=Department of Pediatric Acute Disease, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=9 en-affil=Department of Pediatrics, Okayama University Hospital kn-affil= affil-num=10 en-affil=Department of Pediatrics, Okayama University Hospital kn-affil= affil-num=11 en-affil=Department of Pediatrics, Okayama University Hospital kn-affil= affil-num=12 en-affil=Department of Gastroenterological Surgery, Okayama University Hospital kn-affil= affil-num=13 en-affil=Department of Pediatrics, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= en-keyword=Neonatal hemochromatosis kn-keyword=Neonatal hemochromatosis en-keyword=Thalassemia kn-keyword=Thalassemia en-keyword=Liver transplantation kn-keyword=Liver transplantation en-keyword=Gestational alloimmune liver disease kn-keyword=Gestational alloimmune liver disease en-keyword=Case report kn-keyword=Case report en-keyword=Hepcidin kn-keyword=Hepcidin en-keyword=Ineffective erythropoiesis kn-keyword=Ineffective erythropoiesis en-keyword=Growth differentiation factor-15 kn-keyword=Growth differentiation factor-15 END start-ver=1.4 cd-journal=joma no-vol=11 cd-vols= no-issue=19 article-no= start-page=2970 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220923 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Treatment of Marmoset Intracerebral Hemorrhage with Humanized Anti-HMGB1 mAb en-subtitle= kn-subtitle= en-abstract= kn-abstract=Intracerebral hemorrhage (ICH) is recognized as a severe clinical problem lacking effective treatment. High mobility group box-1 (HMGB1) exhibits inflammatory cytokine-like activity once released into the extracellular space from the nuclei. We previously demonstrated that intravenous injection of rat anti-HMGB1 monoclonal antibody (mAb) remarkably ameliorated brain injury in a rat ICH model. Therefore, we developed a humanized anti-HMGB1 mAb (OKY001) for clinical use. The present study examined whether and how the humanized anti-HMGB1 mAb ameliorates ICH injury in common marmosets. The results show that administration of humanized anti-HMGB1 mAb inhibited HMGB1 release from the brain into plasma, in association with a decrease of 4-hydroxynonenal (4-HNE) accumulation and a decrease in cerebral iron deposition. In addition, humanized anti-HMGB1 mAb treatment resulted in a reduction in brain injury volume at 12 d after ICH induction. Our in vitro experiment showed that recombinant HMGB1 inhibited hemoglobin uptake by macrophages through CD163 in the presence of haptoglobin, suggesting that the release of excess HMGB1 from the brain may induce a delay in hemoglobin scavenging, thereby allowing the toxic effects of hemoglobin, heme, and Fe2+ to persist. Finally, humanized anti-HMGB1 mAb reduced body weight loss and improved behavioral performance after ICH. Taken together, these results suggest that intravenous injection of humanized anti-HMGB1 mAb has potential as a novel therapeutic strategy for ICH. en-copyright= kn-copyright= en-aut-name=WangDengli en-aut-sei=Wang en-aut-mei=Dengli kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OusakaDaiki en-aut-sei=Ousaka en-aut-mei=Daiki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=QiaoHandong en-aut-sei=Qiao en-aut-mei=Handong kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=WangZiyi en-aut-sei=Wang en-aut-mei=Ziyi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=ZhaoKun en-aut-sei=Zhao en-aut-mei=Kun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=GaoShangze en-aut-sei=Gao en-aut-mei=Shangze kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=LiuKeyue en-aut-sei=Liu en-aut-mei=Keyue kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=TeshigawaraKiyoshi en-aut-sei=Teshigawara en-aut-mei=Kiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=TakadaKenzo en-aut-sei=Takada en-aut-mei=Kenzo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=NishiboriMasahiro en-aut-sei=Nishibori en-aut-mei=Masahiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= affil-num=1 en-affil=Department of Pharmacology, Faculty of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=2 en-affil=Department of Pharmacology, Faculty of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=3 en-affil=Department of Pharmacology, Faculty of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=4 en-affil=Research Fellow of Japan Society for the Promotion of Science kn-affil= affil-num=5 en-affil=Department of Molecular Biology and Biochemistry, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=6 en-affil=School of Pharmaceutical Sciences, Tsinghua University kn-affil= affil-num=7 en-affil=Department of Pharmacology, Faculty of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=8 en-affil=Department of Pharmacology, Faculty of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=9 en-affil=Sapporo Laboratory, EVEC, Inc. kn-affil= affil-num=10 en-affil=Department of Translational Research and Drug Development, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= en-keyword=intracerebral hemorrhage kn-keyword=intracerebral hemorrhage en-keyword=HMGB1 kn-keyword=HMGB1 en-keyword=antibody therapy kn-keyword=antibody therapy en-keyword=non-human primate kn-keyword=non-human primate END start-ver=1.4 cd-journal=joma no-vol=45 cd-vols= no-issue=11 article-no= start-page=3322 end-page=3337 dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220907 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=FE UPTAKE‐INDUCING PEPTIDE1 maintains Fe translocation by controlling Fe deficiency response genes in the vascular tissue of Arabidopsis en-subtitle= kn-subtitle= en-abstract= kn-abstract=FE UPTAKE-INDUCING PEPTIDE1 (FEP1), also named IRON MAN3 (IMA3) is a short peptide involved in the iron deficiency response in Arabidopsis thaliana. Recent studies uncovered its molecular function, but its physiological function in the systemic Fe response is not fully understood. To explore the physiological function of FEP1 in iron homoeostasis, we performed a transcriptome analysis using the FEP1 loss-of-function mutant fep1-1 and a transgenic line with oestrogen-inducible expression of FEP1. We determined that FEP1 specifically regulates several iron deficiency-responsive genes, indicating that FEP1 participates in iron translocation rather than iron uptake in roots. The iron concentration in xylem sap under iron-deficient conditions was lower in the fep1-1 mutant and higher in FEP1-induced transgenic plants compared with the wild type (WT). Perls staining revealed a greater accumulation of iron in the cortex of fep1-1 roots than in the WT root cortex, although total iron levels in roots were comparable in the two genotypes. Moreover, the fep1-1 mutation partially suppressed the iron overaccumulation phenotype in the leaves of the oligopeptide transporter3-2 (opt3-2) mutant. These data suggest that FEP1 plays a pivotal role in iron movement and in maintaining the iron quota in vascular tissues in Arabidopsis. en-copyright= kn-copyright= en-aut-name=OkadaSatoshi en-aut-sei=Okada en-aut-mei=Satoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=LeiGui J. en-aut-sei=Lei en-aut-mei=Gui J. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=YamajiNaoki en-aut-sei=Yamaji en-aut-mei=Naoki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=HuangSheng en-aut-sei=Huang en-aut-mei=Sheng kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=MaJian F. en-aut-sei=Ma en-aut-mei=Jian F. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=MochidaKeiichi en-aut-sei=Mochida en-aut-mei=Keiichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=HirayamaTakashi en-aut-sei=Hirayama en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= affil-num=1 en-affil=Group of Environmental Stress Response Systems, Institute of Plant Science and Resources, Okayama University kn-affil= affil-num=2 en-affil=Group of Plant Stress Physiology, Institute of Plant Science and Resources, Okayama University kn-affil= affil-num=3 en-affil=Group of Plant Stress Physiology, Institute of Plant Science and Resources, Okayama University kn-affil= affil-num=4 en-affil=Group of Plant Stress Physiology, Institute of Plant Science and Resources, Okayama University kn-affil= affil-num=5 en-affil=Group of Plant Stress Physiology, Institute of Plant Science and Resources, Okayama University kn-affil= affil-num=6 en-affil=Crop Design Research Team, Institute of Plant Science and Resources, Okayama University kn-affil= affil-num=7 en-affil=Group of Environmental Stress Response Systems, Institute of Plant Science and Resources, Okayama University kn-affil= en-keyword=oestrogen induction system kn-keyword=oestrogen induction system en-keyword=fep1-1 kn-keyword=fep1-1 en-keyword=iron-deficiency response kn-keyword=iron-deficiency response en-keyword=transcriptome kn-keyword=transcriptome END start-ver=1.4 cd-journal=joma no-vol=76 cd-vols= no-issue=4 article-no= start-page=359 end-page=371 dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=202208 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Therapeutic Approaches Targeting miRNA in Systemic Lupus Erythematosus en-subtitle= kn-subtitle= en-abstract= kn-abstract=Systemic lupus erythematosus (SLE) is a potentially fatal systemic autoimmune disease, and its etiology involves both genetic and environmental factors such as sex hormone imbalance, genetic predisposition, epigenetic regulation, and immunological factors. Dysregulation of microRNA (miRNA) is suggested to be one of the epigenetic factors in SLE. miRNA is a 22-nucleotide single-stranded noncoding RNA that contributes to post-transcriptional modulation of gene expression. miRNA targeting therapy has been suggested to be useful for the treatment of cancers and other diseases. Gene knockout and miRNA targeting therapy have been demonstrated to improve SLE disease activity in mice. However, these approaches have not yet reached the level of clinical application. miRNA targeting therapy is limited by the fact that each miRNA has multiple targets. In addition, the expression of certain miRNAs may differ among cell tissues within a single SLE patient. This limitation can be overcome by targeted delivery and chemical modifications. In the future, further research into miRNA chemical modifications and delivery systems will help us develop novel therapeutic agents for SLE. en-copyright= kn-copyright= en-aut-name=Hiramatsu-AsanoSumie en-aut-sei=Hiramatsu-Asano en-aut-mei=Sumie kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=WadaJun en-aut-sei=Wada en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil=Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= en-keyword=systemic lupus erythematosus kn-keyword=systemic lupus erythematosus en-keyword=miRNA kn-keyword=miRNA en-keyword=miRNA targeting therapy kn-keyword=miRNA targeting therapy END start-ver=1.4 cd-journal=joma no-vol=13 cd-vols= no-issue= article-no= start-page=921635 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220707 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Siderophore for Lanthanide and Iron Uptake for Methylotrophy and Plant Growth Promotion in Methylobacterium aquaticum Strain 22A en-subtitle= kn-subtitle= en-abstract= kn-abstract=Methylobacterium and Methylorubrum species are facultative methylotrophic bacteria that are abundant in the plant phyllosphere. They have two methanol dehydrogenases, MxaF and XoxF, which are dependent on either calcium or lanthanides (Lns), respectively. Lns exist as insoluble minerals in nature, and their solubilization and uptake require a siderophore-like substance (lanthanophore). Methylobacterium species have also been identified as plant growth-promoting bacteria although the actual mechanism has not been well-investigated. This study aimed to reveal the roles of siderophore in Methylobacterium aquaticum strain 22A in Ln uptake, bacterial physiology, and plant growth promotion. The strain 22A genome contains an eight-gene cluster encoding the staphyloferrin B-like (sbn) siderophore. We demonstrate that the sbn siderophore gene cluster is necessary for growth under low iron conditions and was complemented by supplementation with citrate or spent medium of the wild type or other strains of the genera. The siderophore exhibited adaptive features, including tolerance to oxidative and nitrosative stress, biofilm formation, and heavy metal sequestration. The contribution of the siderophore to plant growth was shown by the repressive growth of duckweed treated with siderophore mutant under iron-limited conditions; however, the siderophore was dispensable for strain 22A to colonize the phyllosphere. Importantly, the siderophore mutant could not grow on methanol, but the siderophore could solubilize insoluble Ln oxide, suggesting its critical role in methylotrophy. We also identified TonB-dependent receptors (TBDRs) for the siderophore-iron complex, iron citrate, and Ln, among 12 TBDRs in strain 22A. Analysis of the siderophore synthesis gene clusters and TBDR genes in Methylobacterium genomes revealed the existence of diverse types of siderophores and TBDRs. Methylorubrum species have an exclusive TBDR for Ln uptake that has been identified as LutH. Collectively, the results of this study provide insight into the importance of the sbn siderophore in Ln chelation, bacterial physiology, and the diversity of siderophore and TBDRs in Methylobacterium species. en-copyright= kn-copyright= en-aut-name=JumaPatrick Otieno en-aut-sei=Juma en-aut-mei=Patrick Otieno kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=FujitaniYoshiko en-aut-sei=Fujitani en-aut-mei=Yoshiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=AlessaOla en-aut-sei=Alessa en-aut-mei=Ola kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OyamaTokitaka en-aut-sei=Oyama en-aut-mei=Tokitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=YurimotoHiroya en-aut-sei=Yurimoto en-aut-mei=Hiroya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=SakaiYasuyoshi en-aut-sei=Sakai en-aut-mei=Yasuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TaniAkio en-aut-sei=Tani en-aut-mei=Akio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= affil-num=1 en-affil= Institute of Plant Science and Resources, Okayama University kn-affil= affil-num=2 en-affil= Institute of Plant Science and Resources, Okayama University kn-affil= affil-num=3 en-affil= Institute of Plant Science and Resources, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Science, Kyoto University kn-affil= affil-num=5 en-affil=Graduate School of Agriculture, Kyoto University kn-affil= affil-num=6 en-affil=Graduate School of Agriculture, Kyoto University kn-affil= affil-num=7 en-affil=Institute of Plant Science and Resources, Okayama University kn-affil= en-keyword=Methylobacterium species kn-keyword=Methylobacterium species en-keyword=lanthanide kn-keyword=lanthanide en-keyword=lanthanophore kn-keyword=lanthanophore en-keyword=siderophore kn-keyword=siderophore en-keyword=plant growth promoter kn-keyword=plant growth promoter en-keyword=heavy metal sequestration kn-keyword=heavy metal sequestration END start-ver=1.4 cd-journal=joma no-vol=13 cd-vols= no-issue= article-no= start-page=921636 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220623 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Periplasmic Lanthanide Mediator, Lanmodulin, in Methylobacterium aquaticum Strain 22A en-subtitle= kn-subtitle= en-abstract= kn-abstract=Methylobacterium and Methylorubrum species oxidize methanol via pyrroloquinoline quinone-methanol dehydrogenases (MDHs). MDHs can be classified into two major groups, Ca2+-dependent MDH (MxaF) and lanthanide (Ln(3+))-dependent MDH (XoxF), whose expression is regulated by the availability of Ln(3+). A set of a siderophore, TonB-dependent receptor, and an ABC transporter that resembles the machinery for iron uptake is involved in the solubilization and transport of Ln(3+). The transport of Ln(3+) into the cytosol enhances XoxF expression. A unique protein named lanmodulin from Methylorubrum extorquens strain AM1 was identified as a specific Ln(3+)-binding protein, and its biological function was implicated to be an Ln(3+) shuttle in the periplasm. In contrast, it remains unclear how Ln(3+) levels in the cells are maintained, because Ln(3+) is potentially deleterious to cellular systems due to its strong affinity to phosphate ions. In this study, we investigated the function of a lanmodulin homolog in Methylobacterium aquaticum strain 22A. The expression of a gene encoding lanmodulin (lanM) was induced in response to the presence of La3+. A recombinant LanM underwent conformational change upon La3+ binding. Phenotypic analyses on lanM deletion mutant and overexpressing strains showed that LanM is not necessary for the wild-type and XoxF-dependent mutant's methylotrophic growth. We found that lanM expression was regulated by MxcQE (a two-component regulator for MxaF) and TonB_Ln (a TonB-dependent receptor for Ln(3+)). The expression level of mxcQE was altered to be negatively dependent on Ln(3+) concentration in increment lanM, whereas it was constant in the wild type. Furthermore, when exposed to La3+, increment lanM showed an aggregating phenotype, cell membrane impairment, La deposition in the periplasm evidenced by electron microscopy, differential expression of proteins involved in membrane integrity and phosphate starvation, and possibly lower La content in the membrane vesicle (MV) fractions. Taken together, we concluded that lanmodulin is involved in the complex regulation mechanism of MDHs and homeostasis of cellular Ln levels by facilitating transport and MV-mediated excretion. en-copyright= kn-copyright= en-aut-name=FujitaniYoshiko en-aut-sei=Fujitani en-aut-mei=Yoshiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ShibataTakeshi en-aut-sei=Shibata en-aut-mei=Takeshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TaniAkio en-aut-sei=Tani en-aut-mei=Akio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil=Institute of Plant Science and Resources, Okayama University kn-affil= affil-num=2 en-affil=K.K. AB SCIEX kn-affil= affil-num=3 en-affil=Institute of Plant Science and Resources, Okayama University kn-affil= en-keyword=lanmodulin kn-keyword=lanmodulin en-keyword=lanthanide kn-keyword=lanthanide en-keyword=methanol dehydrogenase kn-keyword=methanol dehydrogenase en-keyword=Methylobacterium species kn-keyword=Methylobacterium species en-keyword=membrane vesicles kn-keyword=membrane vesicles END start-ver=1.4 cd-journal=joma no-vol=58 cd-vols= no-issue=3 article-no= start-page=3470 end-page=3485 dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=SMC Development Guidelines for Axial Flux PM Machines Employing Coreless Rotor Structure for Enhancing Efficiency Based on Experimental Results en-subtitle= kn-subtitle= en-abstract= kn-abstract=In recent years, there has been growing demand for flat electrical machines in order to minimize system size while also maintaining high efficiency. In general, axial flux machines (AFMs) are more suitable for flat form than radial flux machines (RFMs). AFMs usually employ a soft magnetic composite (SMC) for the stator core, and their efficiency can be improved by employing an SMC that has low iron loss. However, this reduces the average torque because there is generally a tradeoff relationship between iron loss and magnetic permeability in SMCs. This article, therefore, proposes an AFM with a coreless rotor structure in which the torque performance is not easily affected by the permeability of the SMC. This article aims to reveal the ideal SMC characteristics for high efficiency in AFMs. First, many virtual SMC materials with different iron loss and permeability are used for simulations of AFMs in order to investigate sensitivity to material properties. The simulations by virtual SMCs take into account the experimental increase in the iron loss. As a result, guidelines for developing SMCs are constructed based on the experimental results. Finally, prototype AFMs employing new SMCs developed by following the guidelines are shown, and it is found that they offer higher efficiency in all operating area than conventional AFMs. In particular, one prototype achieves an extremely high efficiency of over 96% at 6000 r/min, 0.8 Nm in experiments. en-copyright= kn-copyright= en-aut-name=TsunataRen en-aut-sei=Tsunata en-aut-mei=Ren kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakemotoMasatsugu en-aut-sei=Takemoto en-aut-mei=Masatsugu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OgasawaraSatoshi en-aut-sei=Ogasawara en-aut-mei=Satoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SaitoTatsuya en-aut-sei=Saito en-aut-mei=Tatsuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=UenoTomoyuki en-aut-sei=Ueno en-aut-mei=Tomoyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Information Science and Technology, Hokkaido University kn-affil= affil-num=4 en-affil=Sumitomo Electric Industries Ltd. kn-affil= affil-num=5 en-affil=Sumitomo Electric Industries Ltd. kn-affil= END start-ver=1.4 cd-journal=joma no-vol=7 cd-vols= no-issue=15 article-no= start-page=12795 end-page=12802 dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220410 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Eco-Benign Orange-Hued Pigment Derived from Aluminum-Enriched Biogenous Iron Oxide Sheaths en-subtitle= kn-subtitle= en-abstract= kn-abstract=Inorganic pigments have been widely used due to their low cost of production, strong hiding power, and chemical resistance; nevertheless, they have limited hue width and chromaticity. To eliminate these disadvantages, we herein propose the use of an ingenious biotemplate technique to produce Al-enriched biogenic iron oxide (BIOX) materials. Spectrophotometric color analysis showed that high levels of Al inclusion on heat-treated BIOX samples produced heightened yellowish hues and lightness. The Al-enriched BIOX sheaths exhibited a stable tubular structure and excellent thermal stability of color tones after heating at high temperatures and repetitive heat treatments. Ultrastructural analysis and mechanical destruction experiments revealed that the highly chromatic orange-hue of these pigments are ascribed probably to an ingenious cylindrical nanocomposite architecture composed of putative Fe-included low crystalline Al oxide regions and hematite particles embedded therein. The present work therefore demonstrates that the bioengineered material can serve as an epochal orange-hued inorganic pigment with low toxicity and marked thermostability that should meet large industrial demand. en-copyright= kn-copyright= en-aut-name=TamuraKatsunori en-aut-sei=Tamura en-aut-mei=Katsunori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OshimaYuri en-aut-sei=Oshima en-aut-mei=Yuri kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=FuseYuta en-aut-sei=Fuse en-aut-mei=Yuta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NagaokaNoriyuki en-aut-sei=Nagaoka en-aut-mei=Noriyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KunohTatsuki en-aut-sei=Kunoh en-aut-mei=Tatsuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=NakanishiMakoto en-aut-sei=Nakanishi en-aut-mei=Makoto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=FujiiTatsuo en-aut-sei=Fujii en-aut-mei=Tatsuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=NanbaTokuro en-aut-sei=Nanba en-aut-mei=Tokuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=TakadaJun en-aut-sei=Takada en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=4 en-affil=Advanced Research Center for Oral and Craniofacial Sciences, Okayama University kn-affil= affil-num=5 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=6 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=7 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=8 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=9 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol=12 cd-vols= no-issue=3 article-no= start-page=035109 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220303 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Magnetic thickness measurement for various iron steels using magnetic sensor and effect of electromagnetic characteristics en-subtitle= kn-subtitle= en-abstract= kn-abstract=The diagnosis and prevention of the deterioration of iron-steel infrastructure has become an important social issue in recent years. The thickness measurement technique (extremely low-frequency eddy current testing (ELECT)) using a magnetic sensor for detecting steel corrosion at extreme frequency ranges has been previously reported. Using the calibration curves based on the correlation between the phase of the detected magnetic signal and the plate thickness, the plate thickness reduction caused by corrosion can be estimated from the detected phase signal. Iron-steel materials have large changes in electromagnetic characteristics; therefore, the reference calibration data for each type of iron-steel are required for plate thickness estimation. In this study, the effect of electromagnetic characteristics on the magnetic thickness measurement was investigated to improve the thickness estimation. Four types of iron-steel plates (SS400, SM400A, SM490A, and SMA400AW) with thicknesses ranging from 1 mm to 18 mm were measured by ELECT, and the phase change at multiple frequencies of each plate were analyzed. The shift in the phase and linearity regions of the calibration curves for each type of steel plate was observed. To analyze this shift phenomenon, the electromagnetic characteristics (permeability mu and conductivity sigma) of each type of steel were measured. Compared with the permeability mu and conductivity sigma of each steel plate in the applied magnetic field strength range, the product (sigma mu) for various steel plates decreased in the following order: SM400 > SS400 >SMA400AW > SM490A. The product of mu and sigma is related to the skin depth, indicating the electromagnetic wave attenuation and eddy current phase shift in the material. Therefore, each shift in the calibration curve of each type of iron steel is explained by the changes in the parameters sigma and mu. en-copyright= kn-copyright= en-aut-name=TsukadaKeiji en-aut-sei=Tsukada en-aut-mei=Keiji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=HayashiMinoru en-aut-sei=Hayashi en-aut-mei=Minoru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KawakamiTaisei en-aut-sei=Kawakami en-aut-mei=Taisei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=AdachiShoya en-aut-sei=Adachi en-aut-mei=Shoya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=SakaiKenji en-aut-sei=Sakai en-aut-mei=Kenji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=KiwaToshihiko en-aut-sei=Kiwa en-aut-mei=Toshihiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=IshikawaToshiyuki en-aut-sei=Ishikawa en-aut-mei=Toshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=SaariMohd Mawardi en-aut-sei=Saari en-aut-mei=Mohd Mawardi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=HoriKengo en-aut-sei=Hori en-aut-mei=Kengo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=HisazumiKazumasa en-aut-sei=Hisazumi en-aut-mei=Kazumasa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=TominagaTomonori en-aut-sei=Tominaga en-aut-mei=Tomonori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= affil-num=1 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=5 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=6 en-affil=Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University kn-affil= affil-num=7 en-affil=Faculty of Environmental and Urban Engineering Department of Civil, Environmental and Applied System Engineering, Kansai University kn-affil= affil-num=8 en-affil=Faculty of Electrical and Electronic Engineering, Universiti Malaysia Pahang kn-affil= affil-num=9 en-affil=Nippon Steel Metal Products Co., Ltd. kn-affil= affil-num=10 en-affil=Nippon Steel Corp. kn-affil= affil-num=11 en-affil=Nippon Steel Corp. kn-affil= END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=3 article-no= start-page=e0265512 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220316 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Protective effect of tin chloride on rhabdomyolysis-induced acute kidney injury in rats en-subtitle= kn-subtitle= en-abstract= kn-abstract=The heme component of myoglobin plays a crucial role in the pathogenesis of rhabdomyolysis-associated acute kidney injury (RM-AKI). Heme oxiganenase-1 (HO-1) is the rate-limiting enzyme of heme catabolism, and its metabolites, iron, biliverdin, and carbon monoxide, have antioxidant properties. Tin chloride (SnCl2) is a kidney specific HO-1 inducer. In this study, we examined whether the induction of HO-1 in the kidney by SnCl2 pretreatment ameliorates RM-AKI in rats and if the effect is due to the degradation of excess renal free heme. We developed an RM-AKI rat (male Sprague-Dawley rats) model by injecting glycerol (Gly) in the hind limbs. RM-AKI rats were pretreated with saline or SnCl2 or additional SnMP (tin mesoporphyrin, a specific HO inhibitor) followed by Gly treatment. Serum blood urea nitrogen (BUN) and creatinine (Crea) were measured as indicators of renal function. Renal free heme level was assessed based on the levels of delta-aminolevulinate synthase (ALAS1), a heme biosynthetic enzyme, and nuclear BTB and CNC homology 1 (Bach1), an inhibitory transcription factor of HO-1. Elevated free heme levels lead to decreases in ALAS1 and nuclear Bach1. After 24 h of Gly injection, serum BUN and Crea levels in saline-pretreated rats were significantly higher than those in untreated control rats. In contrast, SnCl2-pretreated rats showed no significant increase in the indices. However, additional treatment of SnMP abolished the beneficial effect of SnCl2. Renal ALAS1 mRNA levels and renal nuclear Bach1 protein levels in the saline pretreated rats were significantly lower than those in control rats 3 h after Gly injection. In contrast, the levels in SnCl2-pretreated rats were not altered. The findings indicate that SnCl2 pretreatment confers protection against RM-AKI by virtue of HO-1 induction in the renal system, at least in part through excess free heme degradation. en-copyright= kn-copyright= en-aut-name=OhtaniShinkichi en-aut-sei=Ohtani en-aut-mei=Shinkichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ShimizuHiroko en-aut-sei=Shimizu en-aut-mei=Hiroko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=YamaokaMasakazu en-aut-sei=Yamaoka en-aut-mei=Masakazu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TakahashiToru en-aut-sei=Takahashi en-aut-mei=Toru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OmoriEmiko en-aut-sei=Omori en-aut-mei=Emiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=MorimatsuHiroshi en-aut-sei=Morimatsu en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Department of Anesthesiology and Resuscitology, Okayama University Medical School kn-affil= affil-num=3 en-affil=Department of Anesthesiology, Japanese Red Cross Society Himeji Hospital kn-affil= affil-num=4 en-affil=Department of Faculty of Health and Welfare Science, Okayama Prefectural University kn-affil= affil-num=5 en-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=6 en-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= END start-ver=1.4 cd-journal=joma no-vol=76 cd-vols= no-issue=1 article-no= start-page=33 end-page=39 dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=202202 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Plasma Concentrations of Trace Elements Selenium and Cobalt During and After Coronary Artery Bypass Grafting Surgery en-subtitle= kn-subtitle= en-abstract= kn-abstract=Trace elements selenium (Se) and cobalt (Co) are essential in the human body, and a correlation between Se and cardiac surgery has been suggested. We investigated the plasma concentrations of Se and Co during and after coronary artery bypass grafting (CABG) surgery under cardiopulmonary bypass (CPB). From December 2019 to January 2020, preoperative plasma samples from isolated first-time CABG patients (n=20; 10 males, 10 females) were prospectively collected post-anesthesia and before CPB (T1), 45 min after CPB started (T2), 90 min after CPB started (T3), and postoperative days 1 (T4), and day 4 (T5). The plasma concentrations of Se and Co were measured. The Se concentration was significantly decreased at T2 (105.24±4.08 vs. 68.56±2.42 μg/L, p<0.001) and T3 (105.24±4.08 vs. 80.41±3.40 μg/L, p<0.001). The Co concentration was significantly decreased at T4 (0.35±0.19 vs. 0.26±0.13 μg/L, p<0.01) and T5 (0.35±0.19 vs. 0.23±0.11 μg/L, p<0.001). Five patients developed atrial fibrillation (AF); there was no other operative mortality or major morbidity. This is the first report of alterations of plasma Se and Co concentrations during and after CABG surgery. Our results may indicate that Se supplementation before or during CABG and Co supplementation after CABG may become necessary for patients undergoing CABG. en-copyright= kn-copyright= en-aut-name=ZhouJia-Yi en-aut-sei=Zhou en-aut-mei=Jia-Yi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=HouHai-Tao en-aut-sei=Hou en-aut-mei=Hai-Tao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=WangShi-Fu en-aut-sei=Wang en-aut-mei=Shi-Fu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YangQin en-aut-sei=Yang en-aut-mei=Qin kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=HeGuo-Wei en-aut-sei=He en-aut-mei=Guo-Wei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=The Institute of Cardiovascular Diseases & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital kn-affil= affil-num=2 en-affil=Unit of Perfusion, Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospita kn-affil= affil-num=3 en-affil=Unit of Perfusion, Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital kn-affil= affil-num=4 en-affil=The Institute of Cardiovascular Diseases & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital kn-affil= affil-num=5 en-affil=The Institute of Cardiovascular Diseases & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital kn-affil= en-keyword=trace element kn-keyword=trace element en-keyword=CABG kn-keyword=CABG en-keyword=cardiopulmonary bypass kn-keyword=cardiopulmonary bypass en-keyword=selenium kn-keyword=selenium en-keyword=cobalt kn-keyword=cobalt END start-ver=1.4 cd-journal=joma no-vol=12 cd-vols= no-issue=3 article-no= start-page=30 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220207 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Mitigation of groundwater iron-induced clogging by low-cost bioadsorbent in open loop geothermal heat pump systems en-subtitle= kn-subtitle= en-abstract= kn-abstract=Green energy production from natural resources can reduce emissions of greenhouse gases and pollutants from burning of fossil fuels in power plants. Recently, groundwater geothermal energy (GGE) is harnessed by deploying closed- and open-loop heat systems. In open-loop geothermal heat pump systems (OLGHPS), groundwater is reinjected into aquifer after harnessing GGE. Nevertheless, OLGHPS face noxious clogging issue because of elusive chemistry (corrosion or precipitation) of chemical species, principally of iron (Fe), in pipes and aquifers during reinjection process via oxidation reactions. Plethora of filtering materials are available for removal of ions, but these are quite expensive and environmentally unsafe. More recently, low-cost, eco-friendly, green filtering materials gain much interest. These materials can remove ions from groundwater that can minimize clogging in heat exchange systems, injection wells, and aquifer. In the present study, three filtering materials, i.e., wooden charcoal (biomaterial), yamazuna fine sand, and volcanic ash, were tested to estimate their Fe removal capacity. In upward flow mode with minimum oxygen-water contact, serial column (each with 6 ports) experiments were conducted under constant pressure head and constant velocity conditions. Columns were connected to well water having dissolved Fe concentration of 10.85 mg L-1. Sampling was done at the well, column inlets, column's six sampling ports and column outlets, and samples were analyzed for Fe by atomic absorption spectroscopy. Related tested parameters include pH, EC, temperature, turbidity, porosity, particle diameter, and dissolved oxygen. Volcanic ash showed less Fe removal, while sand filter showed substantial reduction in velocity. Biomaterial (wooden charcoal) displayed higher Fe adsorption capacity compared to other materials that can be ascribed to its surface chemistry and functional groups. Under different flow rates, maximum Fe content of 3.5 g Fe kg(-1) dry charcoal was obtained. By considering a safety factor and influence of groundwater composition, it is possible to design a biomaterial-based iron filter system to minimize Fe-induced chemical clogging in OLGHPS which is an eco-friendly, green energy source. en-copyright= kn-copyright= en-aut-name=FujitaClaudia en-aut-sei=Fujita en-aut-mei=Claudia kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=AkhtarM. Shahbaz en-aut-sei=Akhtar en-aut-mei=M. Shahbaz kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HidakaRay en-aut-sei=Hidaka en-aut-mei=Ray kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NishigakiMakoto en-aut-sei=Nishigaki en-aut-mei=Makoto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil=Geo‑Environmental Evaluation Laboratory, Department of Environmental Design and Civil Engineering, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=2 en-affil=Geo‑Environmental Evaluation Laboratory, Department of Environmental Design and Civil Engineering, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=3 en-affil=Geo‑Environmental Evaluation Laboratory, Department of Environmental Design and Civil Engineering, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=4 en-affil=Geo‑Environmental Evaluation Laboratory, Department of Environmental Design and Civil Engineering, Graduate School of Environmental and Life Science, Okayama University kn-affil= en-keyword=Dissolved iron removal kn-keyword=Dissolved iron removal en-keyword=Chemical clogging kn-keyword=Chemical clogging en-keyword=Open-loop geothermal systems kn-keyword=Open-loop geothermal systems en-keyword=Retention potential kn-keyword=Retention potential en-keyword=Wooden charcoal kn-keyword=Wooden charcoal END start-ver=1.4 cd-journal=joma no-vol=162 cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20223 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Valence control of charge and orbital frustrated system YbFe2O4 with electrochemical Li+ intercalation en-subtitle= kn-subtitle= en-abstract= kn-abstract=We report an attempt valence control of the mixed valence iron triangular oxide YbFe2O4 to develop an effective technique controling the frustration of charges in strongly correlated electron systems. The electrochemical doping of Li + into YbFe2O4 was examined on a cell-type sample similar to the Li-ion secondary battery cell. Systematic changes in the lattice constant and Fe – Fe and Fe–Yb distance were observed with Li doping. Maximum value of the doping was over 300 mAh/g. An EXAFS experiment indicated that Li positioned between Yb octahedron layer (U-layer) and Fe-bipyramidal layer (W-layer). However, detailed change of iron valence state of YbFe2O4was not clearly observed because of the superimpose of the signal from iron metal nano particles in XANES observation. We discuss that the uncertainty might arise from the inhomogeneous distribution of the sample particle size, which might prevent the homogeneous doping of Li because the doping occurs on the surface of each nano-particles. en-copyright= kn-copyright= en-aut-name=MuraseS. en-aut-sei=Murase en-aut-mei=S. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YoshikawaY. en-aut-sei=Yoshikawa en-aut-mei=Y. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=FujiwaraK. en-aut-sei=Fujiwara en-aut-mei=K. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=FukadaY. en-aut-sei=Fukada en-aut-mei=Y. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TeranishiT. en-aut-sei=Teranishi en-aut-mei=T. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=KanoJ. en-aut-sei=Kano en-aut-mei=J. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=FujiiT. en-aut-sei=Fujii en-aut-mei=T. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=InadaY. en-aut-sei=Inada en-aut-mei=Y. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=KatayamaM. en-aut-sei=Katayama en-aut-mei=M. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=YoshiiK. en-aut-sei=Yoshii en-aut-mei=K. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=TsujiT. en-aut-sei=Tsuji en-aut-mei=T. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= en-aut-name=MatsumuraD. en-aut-sei=Matsumura en-aut-mei=D. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=12 ORCID= en-aut-name=IkedaN. en-aut-sei=Ikeda en-aut-mei=N. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=13 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=5 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=6 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=7 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=8 en-affil=College of Life Sciences, Ritsumeikan University kn-affil= affil-num=9 en-affil=College of Life Sciences, Ritsumeikan University kn-affil= affil-num=10 en-affil=Japan Atomic Energy Agency kn-affil= affil-num=11 en-affil=Japan Atomic Energy Agency kn-affil= affil-num=12 en-affil=Japan Atomic Energy Agency kn-affil= affil-num=13 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= en-keyword=RFe2O4 kn-keyword=RFe2O4 en-keyword=YbFe2O4 kn-keyword=YbFe2O4 en-keyword=Triangular lattice kn-keyword=Triangular lattice en-keyword=Charge frustration kn-keyword=Charge frustration en-keyword=Spin frustration kn-keyword=Spin frustration en-keyword=Orbital frustration kn-keyword=Orbital frustration en-keyword=Frustration control kn-keyword=Frustration control en-keyword=Li doping kn-keyword=Li doping END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2021 dt-pub=20210924 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Nanogは食道がんにおける化学療法耐性のマーカーであり、鉄キレート剤の有用な治療標的である kn-title=Nanog is a promising chemoresistant stemness marker and therapeutic target by iron chelators for esophageal cancer en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=NarusakaToru en-aut-sei=Narusaka en-aut-mei=Toru kn-aut-name=鳴坂徹 kn-aut-sei=鳴坂 kn-aut-mei=徹 aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil=岡山大学大学院医歯薬学総合研究科 END start-ver=1.4 cd-journal=joma no-vol=143 cd-vols= no-issue=2 article-no= start-page=021502 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=2020105 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Prediction of the Fracture Location by Tensile Tests of Gray Cast Iron Based on the Dimensional Changes of Graphite Flakes en-subtitle= kn-subtitle= en-abstract= kn-abstract=Gray cast iron has been used as a component in various mechanical parts, such as the blocks and heads of automobile and marine engines, cylinder liners for internal combustion engines, and machine tool bases. It is desirable because of its good castability and machinability, damping characteristics, and high performance-to-cost ratio. On the other hand, weak graphite flakes present in gray cast iron serve as stress concentrators and adversely affect the material strength. Therefore, it is crucial to examine the relationship between the distribution of graphite flakes and the strength or fracture of gray cast iron. In this study, tensile tests on gray cast iron were carried out using a plate specimen and observed by scanning electron microscopy, and the microscopic deformation was observed on the specimen surface. Particularly, the change in the size of graphite flakes during the tensile tests was examined, and the observed trend was discussed. The experimental results reveal that the dimensional changes in the graphite flakes vary in the observed area and that the final fracture occurs in an area where a large dimensional change is observed, suggesting that the fracture location or critical parts of gray cast iron can be predicted from the dimensional changes of the graphite flakes at an early stage of deformation. en-copyright= kn-copyright= en-aut-name=TadaNaoya en-aut-sei=Tada en-aut-mei=Naoya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=UemoriTakeshi en-aut-sei=Uemori en-aut-mei=Takeshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SakamotoJunji en-aut-sei=Sakamoto en-aut-mei=Junji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol=75 cd-vols= no-issue=2 article-no= start-page=153 end-page=167 dt-received= dt-revised= dt-accepted= dt-pub-year=2021 dt-pub=202104 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Lactoferrin-like Immunoreactivity in Distinct Neuronal Populations in the Mouse Central Nervous System en-subtitle= kn-subtitle= en-abstract= kn-abstract=Lactoferrin (Lf) is an iron-binding glycoprotein mainly found in exocrine secretions and the secondary granules of neutrophils. In the central nervous system (CNS), expression of the Lf protein has been reported in the lesions of some neurodegenerative disorders such as Alzheimer’s disease, Parkinson’s disease, and amyotrophic lateral sclerosis, as well as in the aged brain. Lf is primarily considered an iron chelator, protecting cells from potentially toxic iron or iron-requiring microorganisms. Other biological functions of Lf include immunomodulation and transcriptional regulation. However, the roles of Lf in the CNS have yet to be fully clarified. In this study, we raised an antiserum against mouse Lf and investigated the immunohistochemical localization of Lf-like immunoreactivity (Lf-LI) throughout the CNS of adult mice. Lf-LI was found in some neuronal populations throughout the CNS. Intense labeling was found in neurons in the olfactory systems, hypothalamic nuclei, entorhinal cortex, and a variety of brainstem nuclei. This study provides detailed information on the Lf-LI distribution in the CNS, and the findings should promote further understanding of both the physiological and pathological significance of Lf in the CNS. en-copyright= kn-copyright= en-aut-name=ShimaokaShigeyoshi en-aut-sei=Shimaoka en-aut-mei=Shigeyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=HamaokaHitomi en-aut-sei=Hamaoka en-aut-mei=Hitomi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=InoueJunji en-aut-sei=Inoue en-aut-mei=Junji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=AsanumaMasato en-aut-sei=Asanuma en-aut-mei=Masato kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TooyamaIkuo en-aut-sei=Tooyama en-aut-mei=Ikuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=KondoYoichi en-aut-sei=Kondo en-aut-mei=Yoichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil=Department of Anatomy and Cell Biology, Division of Life Sciences, Osaka Medical and Pharmaceutical University kn-affil= affil-num=2 en-affil=Department of Anatomy and Cell Biology, Division of Life Sciences, Osaka Medical and Pharmaceutical University kn-affil= affil-num=3 en-affil=Department of Anatomy and Cell Biology, Division of Life Sciences, Osaka Medical and Pharmaceutical University kn-affil= affil-num=4 en-affil=Department of Medical Neurobiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=5 en-affil=Molecular Neuroscience Research Center, Shiga University of Medical Science kn-affil= affil-num=6 en-affil=Molecular Neuroscience Research Center, Shiga University of Medical Science kn-affil= en-keyword=lactoferrin kn-keyword=lactoferrin en-keyword=immunohistochemistry kn-keyword=immunohistochemistry en-keyword=brain mapping kn-keyword=brain mapping END start-ver=1.4 cd-journal=joma no-vol=18 cd-vols= no-issue=8 article-no= start-page=1831 end-page=1839 dt-received= dt-revised= dt-accepted= dt-pub-year=2021 dt-pub=20210222 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Artificial intelligence supported anemia control system (AISACS) to prevent anemia in maintenance hemodialysis patients en-subtitle= kn-subtitle= en-abstract= kn-abstract=Anemia, for which erythropoiesis-stimulating agents (ESAs) and iron supplements (ISs) are used as preventive measures, presents important difficulties for hemodialysis patients. Nevertheless, the number of physicians able to manage such medications appropriately is not keeping pace with the rapid increase of hemodialysis patients. Moreover, the high cost of ESAs imposes heavy burdens on medical insurance systems. An artificial-intelligence-supported anemia control system (AISACS) trained using administration direction data from experienced physicians has been developed by the authors. For the system, appropriate data selection and rectification techniques play important roles. Decision making related to ESAs poses a multi-class classification problem for which a two-step classification technique is introduced. Several validations have demonstrated that AISACS exhibits high performance with correct classification rates of 72%-87% and clinically appropriate classification rates of 92%-98%. en-copyright= kn-copyright= en-aut-name=OharaToshiaki en-aut-sei=Ohara en-aut-mei=Toshiaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=IkedaHiroshi en-aut-sei=Ikeda en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SugitaniYoshiki en-aut-sei=Sugitani en-aut-mei=Yoshiki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SuitoHiroshi en-aut-sei=Suito en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=HuynhViet Quang Huy en-aut-sei=Huynh en-aut-mei=Viet Quang Huy kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=KinomuraMasaru en-aut-sei=Kinomura en-aut-mei=Masaru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=HaraguchiSoichiro en-aut-sei=Haraguchi en-aut-mei=Soichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=SakuramaKazufumi en-aut-sei=Sakurama en-aut-mei=Kazufumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= affil-num=1 en-affil=Department of Pathology & Experimental Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Department of Internal Medicine, Shigei Medical Research Hospital kn-affil= affil-num=3 en-affil=Advanced Institute for Materials Research, Tohoku University kn-affil= affil-num=4 en-affil=Advanced Institute for Materials Research, Tohoku University kn-affil= affil-num=5 en-affil=Advanced Institute for Materials Research, Tohoku University kn-affil= affil-num=6 en-affil=Division of Hemodialysis and Apheresis, Okayama University Hospital kn-affil= affil-num=7 en-affil=Kobayashi Medicine Clinic kn-affil= affil-num=8 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= en-keyword=anemia kn-keyword=anemia en-keyword=artificial intelligence kn-keyword=artificial intelligence en-keyword=chronic kidney disease kn-keyword=chronic kidney disease en-keyword=erythropoiesis-stimulating agents kn-keyword=erythropoiesis-stimulating agents en-keyword=hemodialysis kn-keyword=hemodialysis en-keyword=iron kn-keyword=iron END start-ver=1.4 cd-journal=joma no-vol=124 cd-vols= no-issue= article-no= start-page=108400 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2021 dt-pub=202102 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of ultrasonic irradiation on γ-Fe2O3 formation by co-precipitation method with Fe3+ salt and alkaline solution en-subtitle= kn-subtitle= en-abstract= kn-abstract=The effect of ultrasonic irradiation on direct maghemite (γ-Fe2O3) preparation by a co-precipitation method with Fe3+ salt (Fe(NO3)3) and an excess amount of alkaline (KOH) solution without going through the conventional magnetite (Fe3O4) formation route was explored in comparison with impeller stirring. The preparation procedure for obtaining iron oxide nanoparticles was designed using the sequential processes of precipitation, decantation, drying and thermal dehydration, and ultrasonic irradiation or impeller stirring was done during the precipitation process. γ-ferric oxyhydroxide (γ-FeOOH) was partially formed in addition to α-ferric oxyhydroxide (α-FeOOH) and thermally dehydrated to γ-Fe2O3 and hematite (α-Fe2O3) by ultrasonic-assisted co-precipitation of Fe3+ salt and the excess KOH solution, whereas only α-FeOOH and α-Fe2O3 were synthesized by impeller stirring. The difference between the products of the two methods was explained by the Lamer model associated with the nucleation and growth of FeOOH. Magnetization increased as the crystallite diameter decreased, which is estimated to facilitate partial formation of magnetic γ-Fe2O3. Magnetization was enhanced by a lower ultrasonic frequency due to the stronger shock wave induced by the cavitation effect. en-copyright= kn-copyright= en-aut-name=KoizumiHayato en-aut-sei=Koizumi en-aut-mei=Hayato kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=UddinMd. Azhar en-aut-sei=Uddin en-aut-mei=Md. Azhar kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KatoYoshiei en-aut-sei=Kato en-aut-mei=Yoshiei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=2 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=3 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= en-keyword=γ-Fe2O3 kn-keyword=γ-Fe2O3 en-keyword=Ultrasonic irradiation kn-keyword=Ultrasonic irradiation en-keyword=Impeller stirring kn-keyword=Impeller stirring en-keyword=γ-FeOOH kn-keyword=γ-FeOOH en-keyword=Co-precipitation method kn-keyword=Co-precipitation method END start-ver=1.4 cd-journal=joma no-vol=11 cd-vols= no-issue=1 article-no= start-page=4277 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2021 dt-pub=2021219 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Direct evidence of electronic ferroelectricity in YbFe2O4 using neutron diffraction and nonlinear spectroscopy en-subtitle= kn-subtitle= en-abstract= kn-abstract=We report the first observation of room temperature spontaneous electric polarization in an electronic ferroelectric material, a YbFe2O4 single crystal. The observation was based on second harmonic generation (SHG), a nonlinear optical process. Tensor analysis of the SHG signal revealed that this material has a polar charge superstructure with Cm symmetry. This result settles the long-term discussion on the uncertainty about electronic ferroelectric properties, including the charge order structure. We present a complete picture of the polar charge ordering of this material via consistent results from two different characterization methods. The SHG signal shows the same temperature dependence as the superlattice signal observed in neutron diffraction experiments. These results prove ferroelectric coupling to electron ordering in YbFe2O4, which results in electronic ferroelectricity which is enabled by the real space ordering of iron cations with different valences. The existence of electronic ferroelectricity holds promise for future electronics technologies where devices run a thousand times faster than frequency of the present CPU (a few gigahertz) embedded in smartphones, etc. en-copyright= kn-copyright= en-aut-name=FujiwaraK. en-aut-sei=Fujiwara en-aut-mei=K. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=FukadaY. en-aut-sei=Fukada en-aut-mei=Y. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OkudaY. en-aut-sei=Okuda en-aut-mei=Y. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SeimiyaR. en-aut-sei=Seimiya en-aut-mei=R. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=IkedaN. en-aut-sei=Ikeda en-aut-mei=N. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=YokoyamaK. en-aut-sei=Yokoyama en-aut-mei=K. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=YuH. en-aut-sei=Yu en-aut-mei=H. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=KoshiharaS. en-aut-sei=Koshihara en-aut-mei=S. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=OkimotoY. en-aut-sei=Okimoto en-aut-mei=Y. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=5 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=6 en-affil=Department of Chemistry, Tokyo Institute of Technology kn-affil= affil-num=7 en-affil=Department of Chemistry, Tokyo Institute of Technology kn-affil= affil-num=8 en-affil=Department of Chemistry, Tokyo Institute of Technology kn-affil= affil-num=9 en-affil=Department of Chemistry, Tokyo Institute of Technology kn-affil= END start-ver=1.4 cd-journal=joma no-vol=232 cd-vols= no-issue=1 article-no= start-page=17 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2021 dt-pub=20210106 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Enhancement of Zinc Ion Removal from Water by Physically Mixed Particles of Iron/Iron Sulfide en-subtitle= kn-subtitle= en-abstract= kn-abstract=Zinc (Zn) removal by physically mixed particles of zero-valent iron (Fe) and iron sulfide (FeS) was investigated as one technology for Zn removal from waste groundwater. The effects of the Fe/FeS mass ratio, including a single Fe and FeS particles, and pH on changes in the concentrations of Zn, Fe, and S were examined by a batch test and column tests, and the mechanism of Zn elimination was discussed. Among all the mixing fractions of Fe and FeS, Zn was eliminated most effectively by 3Fe/7FeS (mass ratio of Fe/FeS = 3/7). The Zn removal rate decreased in the order of 3Fe/7FeS, FeS, and Fe, whereas the Fe concentration decreased in the order of Fe, FeS, and 3Fe/7FeS. The S concentration of FeS was larger than that of 3Fe/7FeS. The Zn removal rate by physically mixed 3Fe/7FeS particles was enhanced by a local cell reaction between the Fe and FeS particles. The electrons caused by Fe corrosion moved to the FeS surface and reduced the dissolved oxygen in the solution. Zn2+, Fe2+, and OH− ions in the solution were then coprecipitated on the particles as ZnFe2(OH)6 and oxidized to ZnFe2O4. Moreover, Zn2+ was sulfurized as ZnS by both the Fe/FeS mixture and the simple FeS particles. The Zn removal rate increased with increasing pH in the range from pH 3 to 7. From a kinetic analysis of Zn removal, the rate constant of anode (Fe)/cathode (FeS) reaction was almost the same as that of ZnS formation and slightly larger than that of Fe alone. en-copyright= kn-copyright= en-aut-name=KambaYuya en-aut-sei=Kamba en-aut-mei=Yuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=UetaMiharu en-aut-sei=Ueta en-aut-mei=Miharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=UddinMd. Azhar en-aut-sei=Uddin en-aut-mei=Md. Azhar kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KatoYoshiei en-aut-sei=Kato en-aut-mei=Yoshiei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=2 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=3 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=4 en-affil=Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University kn-affil= en-keyword=Zero-valent iron kn-keyword=Zero-valent iron en-keyword=Iron sulfide kn-keyword=Iron sulfide en-keyword=Zinc ion kn-keyword=Zinc ion en-keyword=Zinc removal kn-keyword=Zinc removal en-keyword=Groundwater treatment kn-keyword=Groundwater treatment END start-ver=1.4 cd-journal=joma no-vol=60 cd-vols= no-issue=1 article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=2020 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Hemosiderin deposition in lymph nodes of patients with plasma cell-type Castleman disease en-subtitle= kn-subtitle= en-abstract= kn-abstract=Plasma cell-type Castleman disease (PCD) is a rare idiopathic atypical lymphoproliferative disorder. It is difficult to differentiate between PCD and IgG4-related disease (IgG4-RD) based on histology alone. As PCD often presents with abundant hemosiderin deposition, lymph node lesions obtained from 22 PCD patients and 12 IgG4-RD patients were analyzed using Prussian blue staining to clarify whether hemosiderin deposition is effective in distinguishing between these two diseases. The analysis disclosed that hemosiderin was more densely deposited in PCD than in IgG4-RD. The median number of Prussian blue-positive cells ± standard deviation (SD) in PCD and IgG4-RD cases was 13 ± 36 cells/3HPFs and 4 ± 8 cells/3HPFs (P = 0.034), respectively. In addition, we analyzed the relationship between hemosiderin deposition and levels of serum interleukin (IL)-6, serum C-reactive protein (CRP), and anemia-related biomarkers. We found that hemosiderin deposition was significantly correlated with the level of serum CRP (P = 0.045); however, no significant correlation was observed between hemosiderin deposition and serum IL-6 levels (P = 0.204). A non-significant positive correlation was observed between hemosiderin deposition and serum hemoglobin levels (P=0.09). Furthermore, no significant correlation was observed between hemosiderin deposition and serum iron levels (P = 0.799). In conclusion, hemosiderin deposition characteristically observed in PCD may be related to the inflammatory aggressiveness of the disease and could be used for its differential diagnosis. en-copyright= kn-copyright= en-aut-name=HanYanyan en-aut-sei=Han en-aut-mei=Yanyan kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=IgawaTakuro en-aut-sei=Igawa en-aut-mei=Takuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OginoKyohei en-aut-sei=Ogino en-aut-mei=Kyohei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NishikoriAsami en-aut-sei=Nishikori en-aut-mei=Asami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=GionYuka en-aut-sei=Gion en-aut-mei=Yuka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=SatoYasuharu en-aut-sei=Sato en-aut-mei=Yasuharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= affil-num=1 en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=3 en-affil=Department of Pathology, Fukuyama City Hospital kn-affil= affil-num=4 en-affil=Division of Pathophysiology, Okayama University Graduate School of Health Sciences kn-affil= affil-num=5 en-affil=Division of Pathophysiology, Okayama University Graduate School of Health Sciences kn-affil= affil-num=6 en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=7 en-affil=Division of Pathophysiology, Okayama University Graduate School of Health Sciences kn-affil= en-keyword=hemosiderin deposition kn-keyword=hemosiderin deposition en-keyword=plasma cell-type Castleman disease kn-keyword=plasma cell-type Castleman disease en-keyword=IgG4-related disease kn-keyword=IgG4-related disease en-keyword=serum IL-6 kn-keyword=serum IL-6 en-keyword=serum C-reactive protein kn-keyword=serum C-reactive protein END start-ver=1.4 cd-journal=joma no-vol=5 cd-vols= no-issue=42 article-no= start-page=27287 end-page=27294 dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20201016 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Preparation and Characterization of Additional Metallic Element-Containing Tubular Iron Oxides of Bacterial Origin en-subtitle= kn-subtitle= en-abstract= kn-abstract=Biogenic microtubular iron oxides (BIOXs) derived from Leptothrix spp. are known as promising multifunctional materials for industrial applications such as ceramic pigments and catalyst carriers. Here, we report unprecedented BIOX products with additive depositions of various metallic elements prepared by a newly devised "two-step" method using an artificial culture system of Leptothrix cholodnii strain OUMS1; the method comprises a biotic formation of immature organic sheaths and subsequent abiotic deposition of Fe and intended elements on the sheaths. Chemical composition ratios of the additional elements Al, Zr, and Ti in the respective BIOXs were arbitrarily controllable depending on initial concentrations of metallic salts added to reaction solutions. Raman spectroscopy exemplified an existence of Fe-O-Al linkage in the Al-containing BIOX matrices. Time-course analyses revealed the underlying physiological mechanism for the BIOX formation. These results indicate that our advanced method can contribute greatly to creations of innovative bioderived materials with improved functionalities. en-copyright= kn-copyright= en-aut-name=TamuraKatsunori en-aut-sei=Tamura en-aut-mei=Katsunori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KunohTatsuki en-aut-sei=Kunoh en-aut-mei=Tatsuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NakanishiMakoto en-aut-sei=Nakanishi en-aut-mei=Makoto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KusanoYoshihiro en-aut-sei=Kusano en-aut-mei=Yoshihiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TakadaJun en-aut-sei=Takada en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=4 en-affil=Department of Applied Chemistry and Biotechnology, Okayama University of Science kn-affil= affil-num=5 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol=12 cd-vols= no-issue=42 article-no= start-page=21780 end-page=21787 dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20200928 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Iron nanoparticle templates for constructing 3D graphene framework with enhanced performance in sodium-ion batteries en-subtitle= kn-subtitle= en-abstract= kn-abstract=This study examines the synthesis and electrochemical performance of three-dimensional graphene for Li-ion batteries and Na-ion batteries. The in situ formation of iron hydroxide nanoparticles (Fe(OH)x NPs) of various weights on the surface of graphene oxide, followed by thermal treatment at elevated temperature and washing using hydrochloric acid, furnished 3D graphene. The characterization studies confirmed the prevention of graphene layer stacking by over 90% compared with thermal treatment without Fe(OH)x. The electrochemical performance of the 3D graphene was evaluated as a counter electrode for lithium metal and sodium metal in a half-cell configuration. This material showed good performances with a charging capacity of 507 mA h g−1 at 372 mA g−1 in Li-ion batteries and 252 mA h g−1 at 100 mA g−1 in Na-ion batteries, which is 1.4 and 1.9 times higher, respectively, than the graphene prepared without Fe(OH)x templates. en-copyright= kn-copyright= en-aut-name=CampéonBenoît D. L. en-aut-sei=Campéon en-aut-mei=Benoît D. L. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=WangChen en-aut-sei=Wang en-aut-mei=Chen kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NishinaYuta en-aut-sei=Nishina en-aut-mei=Yuta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Research Core for Interdisciplinary Sciences, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol=257 cd-vols= no-issue=11 article-no= start-page=2000173 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20200827 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=First‐Principles Study of Pressure‐Induced Amorphization of Fe2SiO4 Fayalite en-subtitle= kn-subtitle= en-abstract= kn-abstract=Fayalite (Fe2SiO4), which is an end member of the olivine series ((FexMg1 − x)2SiO4), undergoes a crystal‐to‐amorphous transformation under high pressure at room temperature conditions. This pressure‐induced amorphized fayalite has an interesting feature: it exhibits antiferromagnetism at low temperature regardless of its non‐crystalline structure. In spite of this unique property, the first‐principles investigation of pressure‐induced amorphized fayalite has not been carried out yet. Herein, to clarify the energetic and structural properties of pressure‐induced amorphized fayalite, the first‐principles molecular dynamics simulations of the compression and decompression processes of fayalite in the pressure range 0–120 GPa are performed. The energetic and structural properties are also compared with those of well‐equilibrated melt‐quenched amorphous Fe2SiO4. Based on structural analysis, it is confirmed that not only sixfold but also fivefold coordinated silicon atoms exist in the amorphous‐like structure under high pressure. In addition, it is found that the silicon atoms play the role of network former in the amorphous‐like phase under high pressure, but change to a network‐modifier role after release to ambient conditions. Moreover, it is found that the obtained amorphous‐like phase has a partially ordered structure. It is inferred that the partially ordered structure likely enables the pressure‐amorphized fayalite to exhibit antiferromagnetism. en-copyright= kn-copyright= en-aut-name=MisawaMasaaki en-aut-sei=Misawa en-aut-mei=Masaaki kn-aut-name=三澤賢明 kn-aut-sei=三澤 kn-aut-mei=賢明 aut-affil-num=1 ORCID= en-aut-name=ShimojoFuyuki en-aut-sei=Shimojo en-aut-mei=Fuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Department of Physics, Kumamoto University kn-affil= en-keyword=amorphous structures kn-keyword=amorphous structures en-keyword=density functional theory kn-keyword=density functional theory en-keyword=iron silicate kn-keyword=iron silicate en-keyword=molecular dynamics kn-keyword=molecular dynamics END start-ver=1.4 cd-journal=joma no-vol=3 cd-vols= no-issue=1 article-no= start-page=232 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20200511 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Structure of a cyanobacterial photosystem I surrounded by octadecameric IsiA antenna proteins en-subtitle= kn-subtitle= en-abstract= kn-abstract=Iron-stress induced protein A (IsiA) is a chlorophyll-binding membrane-spanning protein in photosynthetic prokaryote cyanobacteria, and is associated with photosystem I (PSI) trimer cores, but its structural and functional significance in light harvesting remains unclear. Here we report a 2.7-angstrom resolution cryo-electron microscopic structure of a supercomplex between PSI core trimer and IsiA from a thermophilic cyanobacterium Thermosynechococcus vulcanus. The structure showed that 18 IsiA subunits form a closed ring surrounding a PSI trimer core. Detailed arrangement of pigments within the supercomplex, as well as molecular interactions between PSI and IsiA and among IsiAs, were resolved. Time-resolved fluorescence spectra of the PSI-IsiA supercomplex showed clear excitation-energy transfer from IsiA to PSI, strongly indicating that IsiA functions as an energy donor, but not an energy quencher, in the supercomplex. These structural and spectroscopic findings provide important insights into the excitation-energy-transfer and subunit assembly mechanisms in the PSI-IsiA supercomplex. Akita et al. present the latest approach to solve IsiA-PSI supercomplex molecular structure with increased resolution using cryo-EM and time-resolved fluorescence studies. With 2.7 angstrom resolution, they reveal molecular interactions between PSI and IsiA subunits and that IsiA functions as an energy donor in the supercomplex. en-copyright= kn-copyright= en-aut-name=AkitaFusamichi en-aut-sei=Akita en-aut-mei=Fusamichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NagaoRyo en-aut-sei=Nagao en-aut-mei=Ryo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KatoKoji en-aut-sei=Kato en-aut-mei=Koji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NakajimaYoshiki en-aut-sei=Nakajima en-aut-mei=Yoshiki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=YokonoMakio en-aut-sei=Yokono en-aut-mei=Makio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=UenoYoshifumi en-aut-sei=Ueno en-aut-mei=Yoshifumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=SuzukiTakehiro en-aut-sei=Suzuki en-aut-mei=Takehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=DohmaeNaoshi en-aut-sei=Dohmae en-aut-mei=Naoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=ShenJian-Ren en-aut-sei=Shen en-aut-mei=Jian-Ren kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=AkimotoSeiji en-aut-sei=Akimoto en-aut-mei=Seiji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=MiyazakiNaoyuki en-aut-sei=Miyazaki en-aut-mei=Naoyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Research Institute for Interdisciplinary Science, Okayama University kn-affil= affil-num=3 en-affil=Research Institute for Interdisciplinary Science, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=5 en-affil=Nippon Flour Mills Co., Ltd., Innovation Center kn-affil= affil-num=6 en-affil=Graduate School of Science, Kobe University kn-affil= affil-num=7 en-affil=Biomolecular Characterization Unit, RIKEN Center for Sustainable Resource Science kn-affil= affil-num=8 en-affil=Biomolecular Characterization Unit, RIKEN Center for Sustainable Resource Science kn-affil= affil-num=9 en-affil= Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=10 en-affil=Graduate School of Science, Kobe University kn-affil= affil-num=11 en-affil=Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba kn-affil= en-keyword=Cryoelectron microscopy kn-keyword=Cryoelectron microscopy en-keyword=Photosystem I kn-keyword=Photosystem I END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20200325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=イミダゾール基を有するビス二座シッフ塩基配位子を用いた多核鉄(II)錯体の合成及び性質 kn-title=Synthesis and Properties of Multinuclear Iron(II) Complexes with Bis(bidentate) Schiff Base Ligands Containing Imidazole Groups en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=TanakaTsubasa en-aut-sei=Tanaka en-aut-mei=Tsubasa kn-aut-name=田中翼 kn-aut-sei=田中 kn-aut-mei=翼 aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil=岡山大学大学院自然科学研究科 END start-ver=1.4 cd-journal=joma no-vol=7 cd-vols= no-issue=3 article-no= start-page=036001 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20200316 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Inhomogeneous superconductivity in thin crystals of FeSe1-xTex (x=1.0, 0.95, and 0.9) en-subtitle= kn-subtitle= en-abstract= kn-abstract=We investigated the temperature dependence of resistivity in thin crystals of FeSe1-xTex (x = 1.0, 0.95, and 0.9), though bulk crystals with 1.0 x 0.9 are known to be non-superconducting. With decreasing thickness of the crystals, the resistivity of x = 0.95 and 0.9 decreases and reaches zero at a low temperature, which indicates a clear superconducting transition. The anomaly of resistivity related to the structural and magnetic transitions completely disappears in 55- to 155-nm-thick crystals of x = 0.9, resulting in metallic behavior in the normal state. Microbeam x-ray diffraction measurements were performed on bulk single crystals and thin crystals of FeSe1-xTex. A significant difference of the lattice constant, c, was observed in FeSe1-xTex, which varied with differing Te content (x), and even in crystals with the same x, which was mainly caused by inhomogeneity of the Se/Te distribution. It has been found that the characteristic temperatures causing the structural and magnetic transition (T-t), the superconducting transition (T-c), and the zero resistivity (T-c(zero)) are closely related to the value of c in thin crystals of FeSe1-xTex. en-copyright= kn-copyright= en-aut-name=EguchiRitsuko en-aut-sei=Eguchi en-aut-mei=Ritsuko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SendaMegumi en-aut-sei=Senda en-aut-mei=Megumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=UesugiEri en-aut-sei=Uesugi en-aut-mei=Eri kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=GotoHidenori en-aut-sei=Goto en-aut-mei=Hidenori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=FujiwaraAkihiko en-aut-sei=Fujiwara en-aut-mei=Akihiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=ImaiYasuhiko en-aut-sei=Imai en-aut-mei=Yasuhiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=KimuraShigeru en-aut-sei=Kimura en-aut-mei=Shigeru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=NojiTakashi en-aut-sei=Noji en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=KoikeYoji en-aut-sei=Koike en-aut-mei=Yoji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=KubozonoYoshihiro en-aut-sei=Kubozono en-aut-mei=Yoshihiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= affil-num=1 en-affil=Research Institute for Interdisciplinary Science, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=4 en-affil=Research Institute for Interdisciplinary Science, Okayama University kn-affil= affil-num=5 en-affil=Department of Nanotechnology for Sustainable Energy, Kwansei Gakuin University kn-affil= affil-num=6 en-affil=Japan Synchrotron Radiation Research Institute (JASRI) kn-affil= affil-num=7 en-affil=Japan Synchrotron Radiation Research Institute (JASRI) kn-affil= affil-num=8 en-affil=Department of Applied Physics, Tohoku University kn-affil= affil-num=9 en-affil=Department of Applied Physics, Tohoku University kn-affil= affil-num=10 en-affil=Research Institute for Interdisciplinary Science, Okayama University kn-affil= en-keyword=iron-based superconductor kn-keyword=iron-based superconductor en-keyword=thin crystals kn-keyword=thin crystals en-keyword=microbeam XRD kn-keyword=microbeam XRD END start-ver=1.4 cd-journal=joma no-vol=74 cd-vols= no-issue=1 article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=202002 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Promising New Anti-Cancer Strategy: Iron Chelators Targeting CSCs en-subtitle= kn-subtitle= en-abstract= kn-abstract= Iron is a trace but vital element in the human body and is necessary for a multitude of crucial processes in life. However, iron overload is known to induce carcinogenesis via oxidative stress. Cancer cells require large amounts of iron for their rapid division and cell growth. Iron was recently found to play a role in cancer stem cells (CSCs); it maintains stemness during development. Iron also plays an important role in stemness by moderating reactive oxygen species. Thus, iron metabolism in CSCs is a promising therapeutic target. In this review, we summarize the roles of iron in cancer cells and CSCs. We also summarize anti-cancer therapeutic studies with iron chelators and describe our expectation of a new therapeutic strategy for CSCs on the basis of our findings. en-copyright= kn-copyright= en-aut-name=ChenYuehua en-aut-sei=Chen en-aut-mei=Yuehua kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OharaToshiaki en-aut-sei=Ohara en-aut-mei=Toshiaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=XingBoyi en-aut-sei=Xing en-aut-mei=Boyi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=QiJiping en-aut-sei=Qi en-aut-mei=Jiping kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=NomaKazuhiro en-aut-sei=Noma en-aut-mei=Kazuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=MatsukawaAkihiro en-aut-sei=Matsukawa en-aut-mei=Akihiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil=Department of Pathology and Experimental Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Department of Pathology and Experimental Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=3 en-affil=Department of Pathology and Experimental Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=4 en-affil=Department of Pathology, the First Affiliated Hospital of Harbin Medical University kn-affil= affil-num=5 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=6 en-affil=Department of Pathology and Experimental Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= en-keyword=cancer stem cell kn-keyword=cancer stem cell en-keyword=stemness kn-keyword=stemness en-keyword=iron kn-keyword=iron en-keyword=chelation kn-keyword=chelation en-keyword=chemotherapy kn-keyword=chemotherapy END start-ver=1.4 cd-journal=joma no-vol=109 cd-vols= no-issue= article-no= start-page=29 end-page=36 dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20200201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Development of Effective Biological Treatment Process for Acid Mine Drainage kn-title=酸性鉱山廃水の 効果的な生物的処理プロセスの開発 en-subtitle= kn-subtitle= en-abstract= kn-abstract= Acid mine drainage (AMD) is acidic and generally enriched with iron, aluminum, sulfate and heavy metals, such as lead and cadmium. AMD is a growing problem of emerging concern that cause detrimental effects to the environment and living organisms. Yanahara mine in Misaki Town, Okayama, Japan, had mainly produced pyrite for sulfuric acid manufacture. Although it was closed in 1991, AMD is being generated from the mine now. A passive treatment based on the biological oxidation of ferrous iron is a promising strategy for AMD remediation. AMD from Yanahara mine is treated in a plant using iron-oxidizing bacteria, Acidithiobacillus ferrooxidans and Ferrovum spp. The AMD generation continues for several centuries with dramatic consequences on the receiving environments. Therefore, the development of sustainable and cost effective treatment process is required. A development of the effective biological treatment process with an iron oxidation reactor operated at pH 3.5 is described in this report. Economic aspects are also discussed. en-copyright= kn-copyright= en-aut-name=KamimuraKazuo en-aut-sei=Kamimura en-aut-mei=Kazuo kn-aut-name=上村一雄 kn-aut-sei=上村 kn-aut-mei=一雄 aut-affil-num=1 ORCID= en-aut-name=KanaoTadayoshi en-aut-sei=Kanao en-aut-mei=Tadayoshi kn-aut-name=金尾忠芳 kn-aut-sei=金尾 kn-aut-mei=忠芳 aut-affil-num=2 ORCID= affil-num=1 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=2 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 en-keyword=acid mine drainage kn-keyword=acid mine drainage en-keyword=bioremediation kn-keyword=bioremediation en-keyword=iron-oxidizing bacteria kn-keyword=iron-oxidizing bacteria en-keyword=microbial community kn-keyword=microbial community en-keyword=Acidithiobacillus ferrooxidans kn-keyword=Acidithiobacillus ferrooxidans END start-ver=1.4 cd-journal=joma no-vol=103 cd-vols= no-issue=8 article-no= start-page=1271 end-page=1281 dt-received= dt-revised= dt-accepted= dt-pub-year=2018 dt-pub=20180801 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=The effects of ferromagnetism and interstitial hydrogen on the equation of states of hcp and dhcp FeHx: Implications for the Earth's inner core age en-subtitle= kn-subtitle= en-abstract= kn-abstract= Hydrogen has been considered as an important candidate of light elements in the Earth's core. Because iron hydrides are unquenchable, hydrogen content is usually estimated from in situ X-ray diffraction measurements that assume the following linear relation: x = (V-FeHx - V-Fe)/Delta V-H, where x is the hydrogen content, Delta V-H is the volume expansion caused by unit concentration of hydrogen, and V-FeHx and V-Fe are volumes of FeHx and pure iron, respectively. To verify the linear relationship, we computed the equation of states of hexagonal iron with interstitial hydrogen by using the Korringa-Kohn-Rostoker method with the coherent potential approximation (KKR-CPA). The results indicate a discontinuous volume change at the magnetic transition and almost no compositional (x) dependence in the ferromagnetic phase at 20 GPa, whereas the linearity is confirmed in the non-magnetic phase. In addition to their effect on the density-composition relationship in the Fe-FeHx system, which is important for estimating the hydrogen incorporation in planetary cores, the magnetism and interstitial hydrogen also affect the electrical resistivity of FeHx. The thermal conductivity can be calculated from the electrical resistivity by using the Wiedemann-Franz law, which is a critical parameter for modeling the thermal evolution of the Earth. Assuming an Fe1-ySiyHx ternary outer core model (0.0 <= x <= 0.7), we calculated the thermal conductivity and the age of the inner core. The resultant thermal conductivity is similar to 100 W/m/K and the maximum inner core age ranges from 0.49 to 0.86 Gyr. en-copyright= kn-copyright= en-aut-name=GomiHitoshi en-aut-sei=Gomi en-aut-mei=Hitoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=FeiYingwei en-aut-sei=Fei en-aut-mei=Yingwei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=YoshinoTakashi en-aut-sei=Yoshino en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil=Institute for Planetary Materials, Okayama University kn-affil= affil-num=2 en-affil=Geophysical Laboratory, Carnegie Institution of Washington kn-affil= affil-num=3 en-affil=Institute for Planetary Materials, Okayama University kn-affil= en-keyword=FeHx kn-keyword=FeHx en-keyword=ferromagnetism kn-keyword=ferromagnetism en-keyword=chemical disorder kn-keyword=chemical disorder en-keyword=equation of states kn-keyword=equation of states en-keyword=KKR-CPA kn-keyword=KKR-CPA END start-ver=1.4 cd-journal=joma no-vol=11 cd-vols= no-issue=2 article-no= start-page=177 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=20190203 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Novel Combination Cancer Therapy with Iron Chelator Targeting Cancer Stem Cells via Suppressing Stemness en-subtitle= kn-subtitle= en-abstract= kn-abstract= Excess iron causes cancer and is thought to be related to carcinogenesis and cancer progression including stemness, but the details remain unclear. Here, we hypothesized that stemness in cancer is related to iron metabolism and that regulating iron metabolism in cancer stem cells (CSCs) may be a novel therapy. In this study, we used murine induced pluripotent stem cells that expressed specific stem cell genes such as Nanog, Oct3/4, Sox2, Klf4, and c-Myc, and two human cancer cell lines with similar stem cell gene expression. Deferasirox, an orally available iron chelator, suppressed expression of stemness markers and spherogenesis of cells with high stemness status in vitro. Combination therapy had a marked antitumor effect compared with deferasirox or cisplatin alone. Iron metabolism appears important for maintenance of stemness in CSCs. An iron chelator combined with chemotherapy may be a novel approach via suppressing stemness for CSC targeted therapy. en-copyright= kn-copyright= en-aut-name=KatsuraYuki en-aut-sei=Katsura en-aut-mei=Yuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OharaToshiaki en-aut-sei=Ohara en-aut-mei=Toshiaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NomaKazuhiro en-aut-sei=Noma en-aut-mei=Kazuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NinomiyaTakayuki en-aut-sei=Ninomiya en-aut-mei=Takayuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KashimaHajime en-aut-sei=Kashima en-aut-mei=Hajime kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=KatoTakuya en-aut-sei=Kato en-aut-mei=Takuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=SatoHiroaki en-aut-sei=Sato en-aut-mei=Hiroaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=KomotoSatoshi en-aut-sei=Komoto en-aut-mei=Satoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=NarusakaToru en-aut-sei=Narusaka en-aut-mei=Toru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=TomonoYasuko en-aut-sei=Tomono en-aut-mei=Yasuko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=XingBoyi en-aut-sei=Xing en-aut-mei=Boyi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= en-aut-name=ChenYuehua en-aut-sei=Chen en-aut-mei=Yuehua kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=12 ORCID= en-aut-name=TazawaHiroshi en-aut-sei=Tazawa en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=13 ORCID= en-aut-name=KagawaShunsuke en-aut-sei=Kagawa en-aut-mei=Shunsuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=14 ORCID= en-aut-name=ShirakawaYasuhiro en-aut-sei=Shirakawa en-aut-mei=Yasuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=15 ORCID= en-aut-name=Kasai Tomonari en-aut-sei=Kasai en-aut-mei=Tomonari kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=16 ORCID= en-aut-name=SenoMasaharu en-aut-sei=Seno en-aut-mei=Masaharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=17 ORCID= en-aut-name=MatsukawaAkihiro en-aut-sei=Matsukawa en-aut-mei=Akihiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=18 ORCID= en-aut-name=FujiwaraToshiyoshi en-aut-sei=Fujiwara en-aut-mei=Toshiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=19 ORCID= affil-num=1 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Department of Pathology and Experimental MedicineOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=3 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=4 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=5 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=6 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=7 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=8 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=9 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=10 en-affil= Shigei Medical Research Institute kn-affil= affil-num=11 en-affil=Department of Pathology and Experimental Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=12 en-affil=Department of Pathology and Experimental Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=13 en-affil= Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=14 en-affil= Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=15 en-affil= Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=16 en-affil=School of Bioscience and Biotechnology, Tokyo University of Technology kn-affil= affil-num=17 en-affil= Laboratory of Nano-Biotechnology, Okayama University Graduate School of Interdisciplinary Science and Engineering in Health Systems kn-affil= affil-num=18 en-affil= Department of Pathology and Experimental Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=19 en-affil=Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= en-keyword=cancer stem cells kn-keyword=cancer stem cells en-keyword=combination therapy kn-keyword=combination therapy en-keyword=iron kn-keyword=iron en-keyword=stemness kn-keyword=stemness END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=20190925 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=鉄キレート剤併用療法による幹細胞性制御を介した、新規癌幹細胞治療 kn-title=A Novel Combination Cancer Therapy with Iron Chelator Targeting Cancer Stem Cells via Suppressing Stemness en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=KatsuraYuki en-aut-sei=Katsura en-aut-mei=Yuki kn-aut-name=桂佑貴 kn-aut-sei=桂 kn-aut-mei=佑貴 aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil=岡山大学大学院医歯薬学総合研究科 END start-ver=1.4 cd-journal=joma no-vol=73 cd-vols= no-issue=5 article-no= start-page=403 end-page=411 dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=201910 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Risk Factors for Low Bone Mineral Density Determined in Patients in a General Practice Setting en-subtitle= kn-subtitle= en-abstract= kn-abstract= Osteoporosis increases the risk of bone fractures. It is diagnosed based on an individual’s bone mineral density (BMD) or a fracture without trauma. BMD is usually measured by the dual energy X-ray absorptiometry (DXA) method. Here we investigated factors for the earliest possible prediction of decreased BMD by examining the relationships between patients’ BMD values and changes in the patients’ physical and laboratory values. We retrospectively reviewed the medical records of 149 patients who visited our department in 2014-2015 for a variety of reasons and underwent an area BMD examination by DXA. We analyzed the relationships between decreasing BMD and the patients’ gender, age, body mass index (BMI), medical background, hemoglobin, electrolytes, and thyroid function. Thirty-nine of the patients were diagnosed with osteoporosis based on their T-scores. An adjusted analysis showed that female gender, aging, and increased serum calcium level were significantly related to decreasing femoral BMD, whereas high BMI was associated with an increase in femoral BMD. Collectively the results indicate that for the early detection of low BMD, it is important for general-practice physicians to consider conducting a BMD checkup when treating female and elderly patients with a low BMI and/or elevated serum calcium level. en-copyright= kn-copyright= en-aut-name=AndoAkemi en-aut-sei=Ando en-aut-mei=Akemi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MitsuhashiToshiharu en-aut-sei=Mitsuhashi en-aut-mei=Toshiharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=Honda Mitsugi en-aut-sei=Honda en-aut-mei= Mitsugi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=HanayamaYoshihisa en-aut-sei=Hanayama en-aut-mei=Yoshihisa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=HasegawaKou en-aut-sei=Hasegawa en-aut-mei=Kou kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=ObikaMikako en-aut-sei=Obika en-aut-mei=Mikako kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=KataokaHitomi en-aut-sei=Kataoka en-aut-mei=Hitomi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=OtsukaFumio en-aut-sei=Otsuka en-aut-mei=Fumio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= affil-num=1 en-affil=Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Center for Innovative Clinical Medicine, Okayama University Hospital kn-affil= affil-num=3 en-affil=Division of Radiology, Department of Medical Technology, Okayama University Hospital kn-affil= affil-num=4 en-affil=Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=5 en-affil=Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=6 en-affil=Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=7 en-affil=Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=8 en-affil=Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= en-keyword=bone mineral density (BMD) kn-keyword=bone mineral density (BMD) en-keyword=body mass index (BMI) kn-keyword=body mass index (BMI) en-keyword=female gender kn-keyword=female gender en-keyword=hypercalcemia kn-keyword=hypercalcemia en-keyword=osteoporosis kn-keyword=osteoporosis END start-ver=1.4 cd-journal=joma no-vol=60 cd-vols= no-issue=24 article-no= start-page=1562 end-page=1565 dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=20190613 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Efficient and practical synthesis of N-acetyl enamides from ketoximes by unique iron catalytic system en-subtitle= kn-subtitle= en-abstract= kn-abstract= A new procedure for the iron-catalyzed synthesis of enamides from ketoximes was developed, and its mechanism was proposed. A unique reduction system, with the concerted use of KI and Na2S2O4, was involved. The reaction exhibited a wide substrate scope and gave good yields in a short reaction time. The procedure is operationally simple and also applicable for the large-scale synthesis. en-copyright= kn-copyright= en-aut-name=Kunishige Takahiro en-aut-sei=Kunishige en-aut-mei= Takahiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=Sawada Daisuke en-aut-sei=Sawada en-aut-mei= Daisuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= en-keyword=Ketoxime kn-keyword=Ketoxime en-keyword=Enamide synthesis kn-keyword=Enamide synthesis en-keyword=Iron catalyst kn-keyword=Iron catalyst en-keyword=One-electron reduction kn-keyword=One-electron reduction END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=1 article-no= start-page=1 end-page=4 dt-received= dt-revised= dt-accepted= dt-pub-year=2017 dt-pub=20171227 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Rounded pebble of metamorphosed iron-formations from conglomerate of the Miocene deposits in Yatakayama, Kibi Plateau, Okayama Prefecture kn-title=岡山県吉備高原弥高山地域に分布する中新統礫岩から変成鉄鉱石礫の発見 en-subtitle= kn-subtitle= en-abstract= kn-abstract= The Kibi Plateau was a part of the Eurasian Continent and separated by the event of opening of Japan Sea. The rounded pebble which is considered to be continental origin was discovered. The pebble is siliceous and attracts magnets. Prepared thin-sections were observed under microscope. Selected minerals were analyzed by EPMA. The rock is composed of recrystallized quartz, magnetite, riebeckite, stilpnomelane and associated with very tiny minerals with very high relief and interference colors. The assemblage suggests that there is a possibility that the rock is a metamorphic rock of iron-formations and derived from continent. en-copyright= kn-copyright= en-aut-name=SuzukiShigeyuki en-aut-sei=Suzuki en-aut-mei=Shigeyuki kn-aut-name=鈴木茂之 kn-aut-sei=鈴木 kn-aut-mei=茂之 aut-affil-num=1 ORCID= en-aut-name=小網晴男 en-aut-sei=小網 en-aut-mei=晴男 kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=臼井まゆみ en-aut-sei=臼井 en-aut-mei=まゆみ kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil=岡山大学大学院自然科学研究科 affil-num=2 en-affil=Okayama Prefectural Okayama Asahi Senior High School kn-affil=岡山県立岡山朝日高等学校 affil-num=3 en-affil=Fujigakuin-Okayama kn-affil=富士学院 en-keyword=Continental origin kn-keyword=Continental origin en-keyword=Miocene conglomerate kn-keyword=Miocene conglomerate en-keyword=rounded pebble kn-keyword=rounded pebble en-keyword=iron-formations kn-keyword=iron-formations en-keyword=Kibi Plateau kn-keyword=Kibi Plateau END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2018 dt-pub=20180323 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=除鉄による癌幹細胞を標的とする新しい治療戦略 kn-title=Iron depletion is a novel therapeutic strategy to target cancer stem cells en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=NinomiyaTakayuki en-aut-sei=Ninomiya en-aut-mei=Takayuki kn-aut-name=二宮卓之 kn-aut-sei=二宮 kn-aut-mei=卓之 aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil=岡山大学大学院医歯薬学総合研究科 END start-ver=1.4 cd-journal=joma no-vol=122 cd-vols= no-issue=1 article-no= start-page=158 end-page=171 dt-received= dt-revised= dt-accepted= dt-pub-year=2017 dt-pub=20170114 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Pressure dependence of electrical conductivity in forsterite en-subtitle= kn-subtitle= en-abstract= kn-abstract= Electrical conductivity of dry forsterite has been measured in muli-anvil apparatus to investigate the pressure dependence of ionic conduction in forsterite. The starting materials for the conductivity experiments were a synthetic forsterite single crystal and a sintered forsterite aggregate synthesized from oxide mixture. Electrical conductivities were measured at 3.5, 6.7, 9.6, 12.1, and 14.9 GPa between 1300 and 2100 K. In the measured temperature range, the conductivity of single crystal forsterite decreases in the order of [001], [010], and [100]. In all cases, the conductivity decreases with increasing pressure and then becomes nearly constant for [100] and [001] and slightly increases above 7 GPa for [010] orientations and a polycrystalline forsterite sample. Pressure dependence of forsterite conductivity was considered as a change of the dominant conduction mechanism composed of migration of both magnesium and oxygen vacancies in forsterite. The activation energy (ΔE) and activation volume (ΔV) for ionic conduction due to migration of Mg vacancy were 1.8–2.7 eV and 5–19 cm3/mol, respectively, and for that due to O vacancy were 2.2–3.1 eV and −1.1 to 0.3 cm3/mol, respectively. The olivine conductivity model combined with small polaron conduction suggests that the most part of the upper mantle is controlled by ionic conduction rather than small polaron conduction. The previously observed negative pressure dependence of the conductivity of olivine with low iron content (Fo90) can be explained by ionic conduction due to migration of Mg vacancies, which has a large positive activation volume. en-copyright= kn-copyright= en-aut-name=YoshinoTakashi en-aut-sei=Yoshino en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ZhangBaohua en-aut-sei=Zhang en-aut-mei=Baohua kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=RhymerBrandon en-aut-sei=Rhymer en-aut-mei=Brandon kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=ZhaoChengcheng en-aut-sei=Zhao en-aut-mei=Chengcheng kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=FeiHongzhan en-aut-sei=Fei en-aut-mei=Hongzhan kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Institute for Planetary Materials, Okayama University kn-affil= affil-num=2 en-affil=Key Laboratory for High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences kn-affil= affil-num=3 en-affil=Department of Geosciences, State University of New York at Stony Brook kn-affil= affil-num=4 en-affil=Institute for Planetary Materials, Okayama University kn-affil= affil-num=5 en-affil=Bayerisches Geoinstitut, University of Bayreuth kn-affil= END start-ver=1.4 cd-journal=joma no-vol=543 cd-vols= no-issue=7643 article-no= start-page=131 end-page=135 dt-received= dt-revised= dt-accepted= dt-pub-year=2017 dt-pub=201703 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Light-induced structural changes and the site of O=O bond formation in PSII caught by XFEL en-subtitle= kn-subtitle= en-abstract= kn-abstract= Photosystem II (PSII) is a huge membrane-protein complex consisting of 20 different subunits with a total molecular mass of 350 kDa for a monomer. It catalyses light-driven water oxidation at its catalytic centre, the oxygen-evolving complex (OEC). The structure of PSII has been analysed at 1.9 Å resolution by synchrotron radiation X-rays, which revealed that the OEC is a Mn4CaO5 cluster organized in an asymmetric, 'distorted-chair' form. This structure was further analysed with femtosecond X-ray free electron lasers (XFEL), providing the 'radiation damage-free' structure. The mechanism of O=O bond formation, however, remains obscure owing to the lack of intermediate-state structures. Here we describe the structural changes in PSII induced by two-flash illumination at room temperature at a resolution of 2.35 Å using time-resolved serial femtosecond crystallography with an XFEL provided by the SPring-8 ångström compact free-electron laser. An isomorphous difference Fourier map between the two-flash and dark-adapted states revealed two areas of apparent changes: around the QB/non-haem iron and the Mn4CaO5 cluster. The changes around the QB/non-haem iron region reflected the electron and proton transfers induced by the two-flash illumination. In the region around the OEC, a water molecule located 3.5 Å from the Mn4CaO5 cluster disappeared from the map upon two-flash illumination. This reduced the distance between another water molecule and the oxygen atom O4, suggesting that proton transfer also occurred. Importantly, the two-flash-minus-dark isomorphous difference Fourier map showed an apparent positive peak around O5, a unique μ4-oxo-bridge located in the quasi-centre of Mn1 and Mn4 (refs 4,5). This suggests the insertion of a new oxygen atom (O6) close to O5, providing an O=O distance of 1.5 Å between these two oxygen atoms. This provides a mechanism for the O=O bond formation consistent with that proposed previously en-copyright= kn-copyright= en-aut-name=SugaMichihiro en-aut-sei=Suga en-aut-mei=Michihiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=AkitaFusamichi en-aut-sei=Akita en-aut-mei=Fusamichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SugaharaMichihiro en-aut-sei=Sugahara en-aut-mei=Michihiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KuboMinoru en-aut-sei=Kubo en-aut-mei=Minoru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=NakajimaYoshiki en-aut-sei=Nakajima en-aut-mei=Yoshiki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=NakaneTakanori en-aut-sei=Nakane en-aut-mei=Takanori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=YamashitaKeitaro en-aut-sei=Yamashita en-aut-mei=Keitaro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=UmenaYasufumi en-aut-sei=Umena en-aut-mei=Yasufumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=NakabayashiMakoto en-aut-sei=Nakabayashi en-aut-mei=Makoto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=YamaneTakahiro en-aut-sei=Yamane en-aut-mei=Takahiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=NakanoTakamitsu en-aut-sei=Nakano en-aut-mei=Takamitsu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= en-aut-name=SuzukiMamoru en-aut-sei=Suzuki en-aut-mei=Mamoru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=12 ORCID= en-aut-name=MasudaTetsuya en-aut-sei=Masuda en-aut-mei=Tetsuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=13 ORCID= en-aut-name=InoueShigeyuki en-aut-sei=Inoue en-aut-mei=Shigeyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=14 ORCID= en-aut-name=KimuraTetsunari en-aut-sei=Kimura en-aut-mei=Tetsunari kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=15 ORCID= en-aut-name=NomuraTakashi en-aut-sei=Nomura en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=16 ORCID= en-aut-name=YonekuraShinichiro en-aut-sei=Yonekura en-aut-mei=Shinichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=17 ORCID= en-aut-name=YuLong-Jiang en-aut-sei=Yu en-aut-mei=Long-Jiang kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=18 ORCID= en-aut-name=SakamotoTomohiro en-aut-sei=Sakamoto en-aut-mei=Tomohiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=19 ORCID= en-aut-name=MotomuraTaiki en-aut-sei=Motomura en-aut-mei=Taiki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=20 ORCID= en-aut-name=ChenJing-Hua en-aut-sei=Chen en-aut-mei=Jing-Hua kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=21 ORCID= en-aut-name=KatoYuki en-aut-sei=Kato en-aut-mei=Yuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=22 ORCID= en-aut-name=NoguchiTakumi en-aut-sei=Noguchi en-aut-mei=Takumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=23 ORCID= en-aut-name=TonoKensuke en-aut-sei=Tono en-aut-mei=Kensuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=24 ORCID= en-aut-name=JotiYasumasa en-aut-sei=Joti en-aut-mei=Yasumasa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=25 ORCID= en-aut-name=KameshimaTakashi en-aut-sei=Kameshima en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=26 ORCID= en-aut-name=HatsuiTakaki en-aut-sei=Hatsui en-aut-mei=Takaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=27 ORCID= en-aut-name=NangoEriko en-aut-sei=Nango en-aut-mei=Eriko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=28 ORCID= en-aut-name=TanakaRie en-aut-sei=Tanaka en-aut-mei=Rie kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=29 ORCID= en-aut-name=NaitowHisashi en-aut-sei=Naitow en-aut-mei=Hisashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=30 ORCID= en-aut-name=MatsuuraYoshinori en-aut-sei=Matsuura en-aut-mei=Yoshinori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=31 ORCID= en-aut-name=YamashitaAyumi en-aut-sei=Yamashita en-aut-mei=Ayumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=32 ORCID= en-aut-name=YamamotoMasaki en-aut-sei=Yamamoto en-aut-mei=Masaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=33 ORCID= en-aut-name=NurekiOsamu en-aut-sei=Nureki en-aut-mei=Osamu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=34 ORCID= en-aut-name=YabashiMakina en-aut-sei=Yabashi en-aut-mei=Makina kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=35 ORCID= en-aut-name=IshikawaTetsuya en-aut-sei=Ishikawa en-aut-mei=Tetsuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=36 ORCID= en-aut-name=IwataSo en-aut-sei=Iwata en-aut-mei=So kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=37 ORCID= en-aut-name=ShenJian-Ren en-aut-sei=Shen en-aut-mei=Jian-Ren kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=38 ORCID= affil-num=1 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=4 en-affil=Japan Science and Technology Agency, PRESTO kn-affil= affil-num=5 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=6 en-affil=Department of Biological Sciences, Graduate School of Science, The University of Tokyo kn-affil= affil-num=7 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=8 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=9 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=10 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=11 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=12 en-affil=Institute for Protein Research, Osaka University kn-affil= affil-num=13 en-affil=Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University kn-affil= affil-num=14 en-affil=Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo kn-affil= affil-num=15 en-affil=Department of Chemistry, Graduate School of Science, Kobe University kn-affil= affil-num=16 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=17 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=18 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=19 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=20 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=21 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=22 en-affil=Division of Material Science, Graduate School of Science, Nagoya University kn-affil= affil-num=23 en-affil=Division of Material Science, Graduate School of Science, Nagoya University kn-affil= affil-num=24 en-affil=Japan Synchrotron Radiation Research Institute kn-affil= affil-num=25 en-affil=Japan Synchrotron Radiation Research Institute kn-affil= affil-num=26 en-affil=Japan Synchrotron Radiation Research Institute46 kn-affil= affil-num=27 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=28 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=29 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=30 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=31 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=32 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=33 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=34 en-affil=Department of Biological Sciences, Graduate School of Science, The University of Tokyo kn-affil= affil-num=35 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=36 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=37 en-affil=RIKEN SPring-8 Center kn-affil= affil-num=38 en-affil=Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2017 dt-pub=20170324 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=微生物由来の非晶質鉄酸化物を用いた有機合成反応の開発 kn-title=Development of Organic Reactions with Bacteriogenic Amorphous Iron Oxide en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=MandaiKyoko en-aut-sei=Mandai en-aut-mei=Kyoko kn-aut-name=萬代恭子 kn-aut-sei=萬代 kn-aut-mei=恭子 aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Tchnology, Okayama University kn-affil=岡山大学大学院自然科学研究科 END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2016 dt-pub=20161227 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=除鉄により誘起されるN-cadherin発現の抑制は、ヒト食道癌における浸潤性悪性表現型を抑制する kn-title=Iron depletion-induced downregulation of N-cadherin expression inhibits invasive malignant phenotypes in human esophageal cancer en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=NishitaniSeishi en-aut-sei=Nishitani en-aut-mei=Seishi kn-aut-name=西谷正史 kn-aut-sei=西谷 kn-aut-mei=正史 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=106 cd-vols= no-issue= article-no= start-page=33 end-page=38 dt-received= dt-revised= dt-accepted= dt-pub-year=2017 dt-pub=20170201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Enzyme-catalyzed synthesis and odor evaluation of both enantiomers of perfume compounds kn-title=酵素触媒反応を鍵とする光学活性な香気物質両鏡像体の合成と香気評価 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Synthesis of both enantiomers of some perfume compounds, and their difference in aroma characteristics are described. Enantiomeric pairs of methyl jasmonate and its 4,5-didehydro congener, principal components of jasmin absolute, were prepared from the corresponding commercially available racemates using lipase-catalyzed optical resolution. The E-value for the reaction is as high as 370. The nature-identical isomers produced superior aroma activity relative to unnatural ones. Racemic lavandulol from a commercial source, was also resolved using several enzymatic transesterifications followed by hydrolysis with PPL. Odor evaluation revealed that the nature-identical isomer should play a key role in lavender oil. Cis-α-irone and cis-γ-irone, used as important violet components for perfumery, were synthesized in optically active forms through fractional crystallization of the diastereomeric salts with α-phenethylamine. The nature-identical irones also had better floral characteristics like ionone. en-copyright= kn-copyright= en-aut-name=KiyotaHiromasa en-aut-sei=Kiyota en-aut-mei=Hiromasa kn-aut-name=清田洋正 kn-aut-sei=清田 kn-aut-mei=洋正 aut-affil-num=1 ORCID= affil-num=1 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 en-keyword=flavor and fragrance kn-keyword=flavor and fragrance en-keyword=enantiomers kn-keyword=enantiomers en-keyword=synthesis kn-keyword=synthesis en-keyword=methyl jasmonate kn-keyword=methyl jasmonate en-keyword=lavandulol kn-keyword=lavandulol en-keyword=irone kn-keyword=irone END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2016 dt-pub=20160930 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=除鉄は肝臓癌に対するソラフェニブの抗腫瘍効果を増強する kn-title=Iron depletion enhances the effect of sorafenib in hepatocarcinoma en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=UranoShinichi en-aut-sei=Urano en-aut-mei=Shinichi kn-aut-name=浦野真一 kn-aut-sei=浦野 kn-aut-mei=真一 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=40 cd-vols= no-issue= article-no= start-page=167 end-page=186 dt-received= dt-revised= dt-accepted= dt-pub-year=2015 dt-pub=20151125 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=An Empirical Analysis of Surviving Projects in Diversification : The case study of an iron and steelmaking companies kn-title=多角化における存続事業の実証的研究 ―鉄鋼メーカーの事例― en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=KoshidaTakahisa en-aut-sei=Koshida en-aut-mei=Takahisa kn-aut-name=越田孝久 kn-aut-sei=越田 kn-aut-mei=孝久 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院社会文化科学研究科 END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2015 dt-pub=20150930 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=新規な金属ドープ鉄カルコゲナイド超伝導体の合成と評価 kn-title=Syntheses and characterisations of new metal-doped iron chalcogenide superconductors en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=ZhengLu en-aut-sei=Zheng en-aut-mei=Lu kn-aut-name=鄭璐 kn-aut-sei=鄭 kn-aut-mei=璐 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院 END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue= article-no= start-page=1 end-page=130 dt-received= dt-revised= dt-accepted= dt-pub-year=2015 dt-pub=20150310 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Iron Age and Early Medieval Ireland kn-title=鉄器時代と中世前期のアイルランド en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=NiiroIzumi en-aut-sei=Niiro en-aut-mei=Izumi kn-aut-name=新納泉 kn-aut-sei=新納 kn-aut-mei=泉 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学文学部 END start-ver=1.4 cd-journal=joma no-vol=9 cd-vols= no-issue=7 article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2014 dt-pub=20140701 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=L-Carnitine Prevents Progression of Non-Alcoholic Steatohepatitis in a Mouse Model with Upregulation of Mitochondrial Pathway en-subtitle= kn-subtitle= en-abstract= kn-abstract=Non-alcoholic steatohepatitis (NASH) is a severe form of non-alcoholic fatty liver disease characterized by lobular inflammation, hepatocellular ballooning, and fibrosis with an inherent risk for progression to cirrhosis and hepatocellular carcinoma (HCC). Mitochondrial dysfunction appears to play a role in the progression from simple steatosis to NASH. L-carnitine (L-b-hydroxy-g-N-trimethylaminobutyric acid), an essential nutrient that converts fat into energy in mitochondria, has been shown to ameliorate liver damage. The aim of the present study was to explore the preventive and therapeutic effect of L-carnitine in NASH model mice. Eight-week-old male STAM mice, a NASH-cirrhosis-hepatocarcinogenic model, were divided into 3 experimental groups and fed as follows: 1) high-fat diet (HFD) (control group); 2) HFD mixed with 0.28% L-carnitine (L-carnitine group); and 3) HFD mixed with 0.01% alpha-tocopherol (alpha-tocopherol group). After 4 or 8 weeks, mice were sacrificed. Blood samples and livers were collected, and hepatic tumors were counted and measured. Livers were subjected to histological study, immunohistochemical staining of 4-hydroxynonenal and ferritin, determination of 8-OHdG levels, mRNA and protein expressions for multiple genes, and metabolomic analysis. The intestinal microbiome was also analyzed. L-carnitine increased hepatic expression of genes related to long-chain fatty acid transport, mitochondrial beta-oxidation, and antioxidant enzymes following suppression of hepatic oxidative stress markers and inflammatory cytokines in NASH, and mice treated with L-carnitine developed fewer liver tumors. Although alpha-tocopherol resulted in NASH improvement in the same manner as L-carnitine, it increased periodontitis-related microbiotic changes and hepatic iron transport-related gene expression and led to less effective for anti-hepatocarcinogenesis. Conclusion: L-carnitine prevents progression of non-alcoholic steatohepatitis in a mouse model by upregulating the mitochondrial beta-oxidation and redox system. en-copyright= kn-copyright= en-aut-name=IshikawaHisashi en-aut-sei=Ishikawa en-aut-mei=Hisashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakakiAkinobu en-aut-sei=Takaki en-aut-mei=Akinobu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TsuzakiRyuichiro en-aut-sei=Tsuzaki en-aut-mei=Ryuichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YasunakaTetsuya en-aut-sei=Yasunaka en-aut-mei=Tetsuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KoikeKazuko en-aut-sei=Koike en-aut-mei=Kazuko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=ShimomuraYasuyuki en-aut-sei=Shimomura en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=SekiHiroyuki en-aut-sei=Seki en-aut-mei=Hiroyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=MatsushitaHiroshi en-aut-sei=Matsushita en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=MiyakeYasuhiro en-aut-sei=Miyake en-aut-mei=Yasuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=IkedaFusao en-aut-sei=Ikeda en-aut-mei=Fusao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=ShirahaHidenori en-aut-sei=Shiraha en-aut-mei=Hidenori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= en-aut-name=NousoKazuhiro en-aut-sei=Nouso en-aut-mei=Kazuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=12 ORCID= en-aut-name=YamamotoKazuhide en-aut-sei=Yamamoto en-aut-mei=Kazuhide kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=13 ORCID= affil-num=1 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=2 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=3 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=4 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=5 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=6 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=7 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=8 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=9 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=10 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=11 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=12 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci affil-num=13 en-affil= kn-affil=Okayama Univ, Dept Gastroenterol & Hepatol, Grad Sch Med Dent & Pharmaceut Sci END start-ver=1.4 cd-journal=joma no-vol=104 cd-vols= no-issue= article-no= start-page=5 end-page=12 dt-received= dt-revised= dt-accepted= dt-pub-year=2015 dt-pub=20150201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=好酸性鉄酸化細菌 Acidithiobacillus ferrooxidans の染色体凝集・分配タンパク質（ScpB）の性質 kn-title=Characterization of a putative chromosome segregation and condensation protein (ScpB) in an acidophilic iron‒oxidizing bacterium Acidithiobacillus ferrooxidans en-subtitle= kn-subtitle= en-abstract=　Acidithiobacillus ferrooxidans は，低品位の銅鉱石から銅を回収するバイオリーチングにおいて使用される微生物 の一つである．この細菌は，エネルギー源として二価鉄イオンや還元型無機硫黄化合物（RISC）を使用する．鉄の酸化に関与する遺伝子の転写は，A. ferrooxidans が RISC で生育したときには抑制されるが，RISC の酸化に関与すると考えられている遺伝子の転写は活性化されることが知られている．硫黄やテトラチオン酸で生育したときにその発現が上方制御される硫化水素：キノン酸化還元酵素のすぐ上流に，ヘリックスターンへリックスモティーフを持つ，ScpB と推定されるタンパク質をコードする遺伝子が存在していた．鉄，硫黄，テトラチオン酸生育細胞から調製した cDNA を用いた半定量的 PCR 分析の結果，硫黄やテトラチオン酸で生育した細胞内の scpB 遺伝子の転写は，鉄生育細胞と比較すると上方制御されていた．組換え ScpB タンパク質を用いたゲルシフトアッセイ法で，ScpB が転写制御因子として機能するかどうかを調べた．その結果，ScpB は DNA に結合したが，結合の特異性はなかった．ScpB が直接 DNA と相互作用する報告はこれまでになかった． kn-abstract=　Acidithiobacillus ferrooxidans is one of the most widely used microorganisms in bioleaching operations to recover copper from low-grade copper sulfide. This bacterium uses ferrous iron and reduced inorganic sulfur compounds (RISCs) as energy sources. Transcriptions of genes thought to be involved in the oxidation of RISCs have been known to be highly activated in A. ferrooxidans cells grown on RISCs, while transcriptions of genes involved in the iron oxidation were repressed in the cells grown on RISCs. A gene encoding a putative chromosome segregation and condensation protein (ScpB) with a helix-turn-helix motif was found in the upstream region of sulfide : quinone oxidoreductase gene, whose expression was up-regulated in cells grown in sulfur and tetrathionate. A semi-quantitative PCR analysis using cDNA prepared from iron-, sulfur-, or tetrathionate-grown cells revealed that the transcription of scpB was up-regulated in cells grown on sulfur or tetrathionate as the energy source. Electrophoretic mobility shift assays were employed to examine whether the ScpB functions as a transcription factor. The result indicated that the recombinant His-tagged ScpB protein was able to nonspecifically bind in vitro to DNA. This is the first report on a direct association of ScpB with DNA. en-copyright= kn-copyright= en-aut-name=KamimuraKazuo en-aut-sei=Kamimura en-aut-mei=Kazuo kn-aut-name=上村一雄 kn-aut-sei=上村 kn-aut-mei=一雄 aut-affil-num=1 ORCID= en-aut-name=NagataNozomu en-aut-sei=Nagata en-aut-mei=Nozomu kn-aut-name=長田臨 kn-aut-sei=長田 kn-aut-mei=臨 aut-affil-num=2 ORCID= en-aut-name=KikumotoMei en-aut-sei=Kikumoto en-aut-mei=Mei kn-aut-name=菊本愛生 kn-aut-sei=菊本 kn-aut-mei=愛生 aut-affil-num=3 ORCID= en-aut-name=SharminSultana en-aut-sei=Sharmin en-aut-mei=Sultana kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=WakaiSatoshi en-aut-sei=Wakai en-aut-mei=Satoshi kn-aut-name=若井暁 kn-aut-sei=若井 kn-aut-mei=暁 aut-affil-num=5 ORCID= en-aut-name=KanaoTadayoshi en-aut-sei=Kanao en-aut-mei=Tadayoshi kn-aut-name=金尾忠芳 kn-aut-sei=金尾 kn-aut-mei=忠芳 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院環境生命科学研究科 affil-num=2 en-affil= kn-affil=岡山大学大学院環境生命科学研究科 affil-num=3 en-affil= kn-affil=岡山大学大学院環境生命科学研究科 affil-num=4 en-affil= kn-affil=岡山大学大学院環境生命科学研究科 affil-num=5 en-affil= kn-affil=神戸大学自然科学系先端融合研究環 affil-num=6 en-affil= kn-affil=神戸大学自然科学系先端融合研究環 en-keyword=Acidithiobacillus ferrooxidans kn-keyword=Acidithiobacillus ferrooxidans en-keyword=Acidophile kn-keyword=Acidophile en-keyword=ScpB kn-keyword=ScpB en-keyword=transcription factor kn-keyword=transcription factor END start-ver=1.4 cd-journal=joma no-vol=11 cd-vols= no-issue=2 article-no= start-page=1647 end-page=1660 dt-received= dt-revised= dt-accepted= dt-pub-year=2014 dt-pub=201402 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Associations of Serum Retinol, alpha-Tocopherol, and gamma-Tocopherol with Biomarkers among Healthy Japanese Men en-subtitle= kn-subtitle= en-abstract= kn-abstract=Retinol, alpha-tocopherol, and gamma-tocopherol are fat-soluble vitamins acting as antioxidants via the prevention of lipid oxidation. Little is known about circulatory levels in healthy individuals. The present cross-sectional study aimed at elucidating the relationship between these antioxidants and clinical biomarkers in 206 male (median age 41 years, range 23-67) employees from companies located in the Okayama Prefecture, Japan. Subjects younger than 40 years (n = 94) showed a positive association of the frequency of alcohol consumption with the circulating retinol (beta = 0.344, p = 0.001) and gamma-tocopherol levels (beta = 0.219, p = 0.041), and an inverse association of fast insulin with serum retinol (beta = -0.301, p = 0.009). In participants older than 40 years (n = 112) we found that an inverse association of HOMA-R with serum retinol (beta = -0.262, p = 0.021), a-tocopherol (beta = -0.236, p = 0.035), and gamma-tocopherol levels (beta = -0.224, p = 0.052); and cigarette smoking was inversely associated with the levels of serum a-tocopherol (beta = -0.286, p = 0.008) and gamma-tocopherol (beta = -0.229, p = 0.040). We further found negative relationships between serum ferritin and the retinol (beta = -0.211, p = 0.032) and a-tocopherol levels (beta = -0.223, p = 0.022) in men over 40 years of age. The present study suggests that the circulatory levels of antioxidant vitamins may modulate the action of insulin and that higher levels of iron might decrease the levels of antioxidant vitamins in the blood. en-copyright= kn-copyright= en-aut-name=ZouYu en-aut-sei=Zou en-aut-mei=Yu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=WangDa-Hong en-aut-sei=Wang en-aut-mei=Da-Hong kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SakanoNoriko en-aut-sei=Sakano en-aut-mei=Noriko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SatoYoshie en-aut-sei=Sato en-aut-mei=Yoshie kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=IwanagaSuketaka en-aut-sei=Iwanaga en-aut-mei=Suketaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=TaketaKazuhisa en-aut-sei=Taketa en-aut-mei=Kazuhisa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=KuboMasayuki en-aut-sei=Kubo en-aut-mei=Masayuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=TakemotoKei en-aut-sei=Takemoto en-aut-mei=Kei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=MasatomiChie en-aut-sei=Masatomi en-aut-mei=Chie kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=InoueKiyomi en-aut-sei=Inoue en-aut-mei=Kiyomi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=OginoKeiki en-aut-sei=Ogino en-aut-mei=Keiki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= affil-num=1 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Publ Hlth affil-num=2 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Publ Hlth affil-num=3 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Gerontol Res affil-num=4 en-affil= kn-affil=Okayama Univ, Grad Sch Hlth Sci affil-num=5 en-affil= kn-affil=Kyoto Univ, Fac Med, Dept Publ Hlth affil-num=6 en-affil= kn-affil=Geriatr Hlth Serv Facil affil-num=7 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Publ Hlth affil-num=8 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Publ Hlth affil-num=9 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Publ Hlth affil-num=10 en-affil= kn-affil=Kobe Tokiwa Univ, Fac Hlth Sci, Dept Nursing affil-num=11 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Publ Hlth en-keyword=serum retinol kn-keyword=serum retinol en-keyword=serum alpha-tocopherol kn-keyword=serum alpha-tocopherol en-keyword=serum gamma-tocopherol kn-keyword=serum gamma-tocopherol en-keyword=HOMA-R kn-keyword=HOMA-R en-keyword=serum ferritin kn-keyword=serum ferritin en-keyword=smoking kn-keyword=smoking en-keyword=alcohol consumption kn-keyword=alcohol consumption END start-ver=1.4 cd-journal=joma no-vol=122 cd-vols= no-issue= article-no= start-page=240 end-page=245 dt-received= dt-revised= dt-accepted= dt-pub-year=2014 dt-pub=201405 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Speciation of arsenic in a thermoacidophilic iron-oxidizing archaeon, Acidianus brierleyi, and its culture medium by inductively coupled plasma–optical emission spectroscopy combined with flow injection pretreatment using an anion-exchange mini-column en-subtitle= kn-subtitle= en-abstract= kn-abstract=The thermoacidophilic iron-oxidizing archaeon Acidianus brierleyi is a microorganism that could be useful in the removal of inorganic As from wastewater, because it simultaneously oxidizes As(III) and Fe(II) to As(V) and Fe(III) in an acidic culture medium, resulting in the immobilization of As(V) as FeAsO4. To investigate the oxidation mechanism, speciation of the As species in both the cells and its culture media is an important issue. Here we describe the successive determination of As(III), As(V), and total As in A. brierleyi and its culture medium via a facile method based on inductively coupled plasma–optical emission spectroscopy (ICP–OES) with a flow injection pretreatment system using a mini-column packed with an anion-exchange resin. The flow-injection pretreatment system consisted of a syringe pump, a selection valve, and a switching valve, which were controlled by a personal computer. Sample solutions with the pH adjusted to 5 were flowed into the mini-column to retain the anionic As(V), whereas As(III) was introduced into ICP–OES with no adsorption on the mini-column due to its electrically neutral form. An acidic solution (1 M HNO3) was then flowed into the mini-column to elute As(V) followed by ICP–OES measurement. The same sample was also subjected to ICP–OES without being passed through the mini-column in order to determine the total amounts of As(III) and As(V). The method was verified by comparing the results of the total As with the sum of As(III) and As(V). The calibration curves showed good linearity with limits of detection of 158, 86, and 211 ppb for As(III), As(V), and total As, respectively. The method was successfully applicable to the determination of the As species contained in the pellets of A. brierleyi and their culture media. The results suggested that the oxidation of As(III) was influenced by the presence of Fe(II) in the culture medium, i.e., Fe(II) enhanced the oxidation of As(III) in A. brierleyi. In addition, we found that no soluble As species was contained in the cell pellets and more than 60% of the As(III) in the culture medium was oxidized by A. brierleyi after a 6-day incubation. en-copyright= kn-copyright= en-aut-name=HigashidaniNaoki en-aut-sei=Higashidani en-aut-mei=Naoki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KanetaTakashi en-aut-sei=Kaneta en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TakeyasuNobuyuki en-aut-sei=Takeyasu en-aut-mei=Nobuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MotomizuShoji en-aut-sei=Motomizu en-aut-mei=Shoji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OkibeNaoko en-aut-sei=Okibe en-aut-mei=Naoko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=SasakiKeiko en-aut-sei=Sasaki en-aut-mei=Keiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Department of Earth Resources Engineering, Graduate School of Engineering, Kyushu University affil-num=6 en-affil= kn-affil=Department of Earth Resources Engineering, Graduate School of Engineering, Kyushu University en-keyword=Thermoacidophilic iron-oxidizing archaeon kn-keyword=Thermoacidophilic iron-oxidizing archaeon en-keyword=Acidianus brierleyi kn-keyword=Acidianus brierleyi en-keyword=Arsenic kn-keyword=Arsenic en-keyword=Speciation kn-keyword=Speciation en-keyword=Inductively coupled plasma–optical emission spectroscopy kn-keyword=Inductively coupled plasma–optical emission spectroscopy en-keyword=Flow injection pretreatment kn-keyword=Flow injection pretreatment END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue= article-no= start-page=11 end-page=18 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=199103 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=CHANGES IN CONCENTRATION OFC ADMIUM, ZINC AND IRON IN GLUTINOUS AND NON-GLUTINOUS RICE FOR CADMIUM SULFIDE WITH OR WITHOUT CALCIUM CARBONATE en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=MuramotoShigeki en-aut-sei=Muramoto en-aut-mei=Shigeki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NishizakiHisao en-aut-sei=Nishizaki en-aut-mei=Hisao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=AoyamaIsao en-aut-sei=Aoyama en-aut-mei=Isao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil= affil-num=3 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=59 cd-vols= no-issue=4 article-no= start-page=189 end-page=201 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=The mechanism of accumulation of manganese, iron and arsenic in the bottom sediment of Lake Biwa kn-title=琵琶湖湖底堆積物中のマンガン, 鉄, ヒ素の蓄積機構 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=NakashimaS. en-aut-sei=Nakashima en-aut-mei=S. kn-aut-name=中島進 kn-aut-sei=中島 kn-aut-mei=進 aut-affil-num=1 ORCID= en-aut-name=MoriiF. en-aut-sei=Morii en-aut-mei=F. kn-aut-name=森井ふじ kn-aut-sei=森井 kn-aut-mei=ふじ aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=59 cd-vols= no-issue=3 article-no= start-page=149 end-page=164 dt-received= dt-revised= dt-accepted= dt-pub-year=1981 dt-pub=19810330 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Distribution of phosphorus, arsenic, cadmium, lead, zinc, copper, manganese, and iron contained in the bottom sediments of several lakes and seas in Japan kn-title=海底および湖底堆積物中のリン, ヒ素, カドミウム, 鉛, 亜鉛, 銅, マンガンおよび鉄の分布について en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=MoriiF. en-aut-sei=Morii en-aut-mei=F. kn-aut-name=森井ふじ kn-aut-sei=森井 kn-aut-mei=ふじ aut-affil-num=1 ORCID= en-aut-name=NakashimaS. en-aut-sei=Nakashima en-aut-mei=S. kn-aut-name=中島進 kn-aut-sei=中島 kn-aut-mei=進 aut-affil-num=2 ORCID= en-aut-name=NishizakiH. en-aut-sei=Nishizaki en-aut-mei=H. kn-aut-name=西崎日佐夫 kn-aut-sei=西崎 kn-aut-mei=日佐夫 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil= affil-num=3 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=62 cd-vols= no-issue=4 article-no= start-page=253 end-page=270 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=199103 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Iron Forms Influencing the Growth and Munty-Odor Production of Cyanobacteria (Oscillatoria brevis, Anabaena macrospora, Phormidium tenue and Oscillatoria tenuis) kn-title=ラン藻類Oscillatoria brevis, Anabaena macrospora, Phormidium tenue及びOscillatoria tenuisの増殖とかび臭物質産生に必要な鉄の形態 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=NakashimaSusumu en-aut-sei=Nakashima en-aut-mei=Susumu kn-aut-name=中島進 kn-aut-sei=中島 kn-aut-mei=進 aut-affil-num=1 ORCID= en-aut-name=YagiMasakazu en-aut-sei=Yagi en-aut-mei=Masakazu kn-aut-name=八木正一 kn-aut-sei=八木 kn-aut-mei=正一 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=52 cd-vols= no-issue=2 article-no= start-page=160 end-page=166 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=20130301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Relationship between ceruloplasmin and oxidative biomarkers including ferritin among healthy Japanese en-subtitle= kn-subtitle= en-abstract= kn-abstract=Serum ceruloplasmin (CP), a marker relevant to copper metabolism, is one of famous inflammation markers with a reduction in Wilson's disease, whereas serum ferritin is a marker relevant to iron metabolism. Recently, ferritin is pointed out to be related with oxidative stress. However, there is still no population research which showed the relation of CP and ferritin. Therefore, we investigated the relationship between CP and ferritin including oxidative stress biomarkers among healthy Japanese (n = 389). We measured serum CP, ferritin, Fe, high-sensitivity C-reactive protein (hs-CRP), and urinary oxidative stress biomarkers [H2O2, 8-hydroxy-2'-deoxyguanosine (8-OHdG), 8-isoprostane] and so on. Subjects showed that age; 41.7 ± 10.0 (year), CP; 31.9 ± 6.8 (mg/dl), ferritin; 123.5 ± 121.0 (ng/ml), hs-CRP; 0.89 ± 2.53 (mg/l), 8-OHdG; 10.2 ± 4.4 [ng/mg creatinine (Cre)] and H2O2; 6.5 ± 10.9 (µM/g Cre), (All data mentioned above were expressed as mean ± SD). CP was significantly and positively correlated with hs-CRP and inversely correlated with ferritin, Fe and 8-OHdG. By a multiple logistic regression analysis, odds ratio of CP according to quartiles of hs-CRP was 4.86, and according to quartiles of 8-OHdG was 0.39 after adjusting for age and other confounding factors. In conclusion, our findings suggest that CP was an antioxidative biomarker which controls oxidative stress, whereas ferritin was a marker which may participate in the generation of oxidative stress. en-copyright= kn-copyright= en-aut-name=InoueKiyomi en-aut-sei=Inoue en-aut-mei=Kiyomi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SakanoNoriko en-aut-sei=Sakano en-aut-mei=Noriko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OginoKeiki en-aut-sei=Ogino en-aut-mei=Keiki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SatoYoshie en-aut-sei=Sato en-aut-mei=Yoshie kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=WangDa-Hong en-aut-sei=Wang en-aut-mei=Da-Hong kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=KuboMasayuki en-aut-sei=Kubo en-aut-mei=Masayuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TakahashiHidekazu en-aut-sei=Takahashi en-aut-mei=Hidekazu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=KanbaraSakiko en-aut-sei=Kanbara en-aut-mei=Sakiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=MiyatakeNobuyuki en-aut-sei=Miyatake en-aut-mei=Nobuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=2 en-affil= kn-affil=Department of Hygiene, Faculty of Medicine, Kagawa University affil-num=3 en-affil= kn-affil=Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=4 en-affil= kn-affil=Perineito Hahatokono Hosp Mothers & Children, Dept Gynecol & Obstet affil-num=5 en-affil= kn-affil=Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=6 en-affil= kn-affil=Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=7 en-affil= kn-affil=Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=8 en-affil= kn-affil=Okayama Univ, Dept Pediat, Grad Sch Med Dent & Pharmaceut Sci affil-num=9 en-affil= kn-affil=Department of Hygiene, Faculty of Medicine, Kagawa University en-keyword=ceruloplasmin kn-keyword=ceruloplasmin en-keyword=ferritin kn-keyword=ferritin en-keyword=8-OHdG kn-keyword=8-OHdG en-keyword=oxidative stress kn-keyword=oxidative stress en-keyword=high-sensitivity C-reactive protein kn-keyword=high-sensitivity C-reactive protein END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=20130325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=血清ビタミンB６濃度と血清鉄濃度の低値はパニック発作、過換気発作に関連している kn-title=Low Serum Concentrations of Vitamin B6 and Iron Are Related to Panic Attack and Hyperventilation Attack en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=MikawaYasuhito en-aut-sei=Mikawa en-aut-mei=Yasuhito kn-aut-name=御川安仁 kn-aut-sei=御川 kn-aut-mei=安仁 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=4 article-no= start-page=147 end-page=163 dt-received= dt-revised= dt-accepted= dt-pub-year=1976 dt-pub=1976 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=DISTRIBUTION OF ARSENIC, CADMIUM, LEAD, ZINC, COPPER, MANGANESE, AND IRON CONTAINED IN THE BOTTOM SEDIMENT OF LAKE BIWA* en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=KobayashiJun en-aut-sei=Kobayashi en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MoriiFuji en-aut-sei=Morii en-aut-mei=Fuji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MuramotoShigeki en-aut-sei=Muramoto en-aut-mei=Shigeki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NakashimaSusumu en-aut-sei=Nakashima en-aut-mei=Susumu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TeraokaHisayuki en-aut-sei=Teraoka en-aut-mei=Hisayuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=HorieShoji en-aut-sei=Horie en-aut-mei=Shoji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil= affil-num=3 en-affil= kn-affil= affil-num=4 en-affil= kn-affil= affil-num=5 en-affil= kn-affil= affil-num=6 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=8 cd-vols= no-issue=3 article-no= start-page=273 end-page=281 dt-received= dt-revised= dt-accepted= dt-pub-year=1938 dt-pub=19381121 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Studies on Nodule Bacteria. XII. Influence of various iron compounds on the nodule bacteria of Astragalus sinicus, (Genge). en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=ItanoArao en-aut-sei=Itano en-aut-mei=Arao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TsujiYasuhiko en-aut-sei=Tsuji en-aut-mei=Yasuhiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=67 cd-vols= no-issue=2 article-no= start-page=99 end-page=104 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=201304 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Low Serum Concentrations of Vitamin B6 and Iron Are Related to Panic Attack and Hyperventilation Attack en-subtitle= kn-subtitle= en-abstract= kn-abstract=Patients undergoing a panic attack (PA) or a hyperventilation attack (HVA) are sometimes admitted to emergency departments (EDs). Reduced serotonin level is known as one of the causes of PA and HVA. Serotonin is synthesized from tryptophan. For the synthesis of serotonin, vitamin B6 (Vit B6) and iron play important roles as cofactors. To clarify the pathophysiology of PA and HVA, we investigated the serum levels of vitamins B2, B6, and B12 and iron in patients with PA or HVA attending an ED. We measured each parameter in 21 PA or HVA patients and compared the values with those from 20 volunteers. We found that both Vit B6 and iron levels were significantly lower in the PA/HVA group than in the volunteer group. There was no significant difference in the serum levels of vitamins B2 or B12. These results suggest that low serum concentrations of Vit B6 and iron are involved in PA and HVA. Further studies are needed to clarify the mechanisms involved in such differences. en-copyright= kn-copyright= en-aut-name=MikawaYasuhito en-aut-sei=Mikawa en-aut-mei=Yasuhito kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MizobuchiSatoshi en-aut-sei=Mizobuchi en-aut-mei=Satoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=EgiMoritoki en-aut-sei=Egi en-aut-mei=Moritoki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MoritaKiyoshi en-aut-sei=Morita en-aut-mei=Kiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Emergency Medicine, Atago Hospital affil-num=2 en-affil= kn-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=3 en-affil= kn-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=4 en-affil= kn-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences en-keyword=panic kn-keyword=panic en-keyword=hyperventilation kn-keyword=hyperventilation en-keyword=vitamin B6 kn-keyword=vitamin B6 en-keyword=iron kn-keyword=iron en-keyword=serotonin kn-keyword=serotonin END start-ver=1.4 cd-journal=joma no-vol=152 cd-vols= no-issue=8 article-no= start-page=635 end-page=639 dt-received= dt-revised= dt-accepted= dt-pub-year=2012 dt-pub=201204 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Iron–platinum–arsenide superconductors Ca10(PtnAs8)(Fe2−xPtxAs2)5 en-subtitle= kn-subtitle= en-abstract= kn-abstract=An overview of the crystal structures and physical properties of the recently discovered iron-platinum-arsenide superconductors, Ca-10(PtnAs8)(Fe2-xPtxAs2)(5) (n = 3 and 4), which have a superconducting transition temperature up to 38K, is provided. The crystal structure consists of superconducting Fe2As2 layers alternating with platinum-arsenic layers, PtnAs8. The upper critical field H-c2, hydrostatic pressure dependence of superconducting transition temperature T-c, and normal-state magnetic susceptibility are reported. en-copyright= kn-copyright= en-aut-name=NoharaMinoru en-aut-sei=Nohara en-aut-mei=Minoru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KakiyaSatomi en-aut-sei=Kakiya en-aut-mei=Satomi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KudoKazutaka en-aut-sei=Kudo en-aut-mei=Kazutaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OshiroYoshihiro en-aut-sei=Oshiro en-aut-mei=Yoshihiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=ArakiShingo en-aut-sei=Araki en-aut-mei=Shingo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=KobayashiTatsuo C. en-aut-sei=Kobayashi en-aut-mei=Tatsuo C. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=OkuKenta en-aut-sei=Oku en-aut-mei=Kenta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=NishiboriEiji en-aut-sei=Nishibori en-aut-mei=Eiji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=SawaHiroshi en-aut-sei=Sawa en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=Department of Physics, Okayama University affil-num=2 en-affil= kn-affil=Department of Physics, Okayama University affil-num=3 en-affil= kn-affil=Department of Physics, Okayama University affil-num=4 en-affil= kn-affil=Department of Physics, Okayama University affil-num=5 en-affil= kn-affil=Department of Physics, Okayama University affil-num=6 en-affil= kn-affil=Department of Physics, Okayama University affil-num=7 en-affil= kn-affil=Department of Applied Physics, Nagoya University affil-num=8 en-affil= kn-affil=Department of Applied Physics, Nagoya University affil-num=9 en-affil= kn-affil=Department of Applied Physics, Nagoya University en-keyword=A. Iron-based superconductors kn-keyword=A. Iron-based superconductors en-keyword=E. Transport kn-keyword=E. Transport en-keyword=E. High pressure kn-keyword=E. High pressure END start-ver=1.4 cd-journal=joma no-vol=470 cd-vols= no-issue=S1 article-no= start-page=S389 end-page=S390 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201012 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Analysis on photoemission spectrum of superconducting FeSe en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we present the result of soft X-ray photoemission spectroscopy and its comparison with the density functional calculation. Although local density approximation seems to be a good starting point for describing the electronic structure of FeSe, the simulated spectrum poorly reproduced the structure around E(B) = 2 eV. This result suggests the necessity of theoretical treatment beyond local density approximation. en-copyright= kn-copyright= en-aut-name=YoshidaRikiya en-aut-sei=Yoshida en-aut-mei=Rikiya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=WakitaTakanori en-aut-sei=Wakita en-aut-mei=Takanori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OkazakiHiroyuki en-aut-sei=Okazaki en-aut-mei=Hiroyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MizuguchiYoshikazu en-aut-sei=Mizuguchi en-aut-mei=Yoshikazu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TsudaShunsuke en-aut-sei=Tsuda en-aut-mei=Shunsuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=TakanoYoshihiko en-aut-sei=Takano en-aut-mei=Yoshihiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TakeyaHiroyuki en-aut-sei=Takeya en-aut-mei=Hiroyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=HirataKazuto en-aut-sei=Hirata en-aut-mei=Kazuto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=KatoYukako en-aut-sei=Kato en-aut-mei=Yukako kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=MuroTakayuki en-aut-sei=Muro en-aut-mei=Takayuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=OkawaMario en-aut-sei=Okawa en-aut-mei=Mario kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= en-aut-name=IshizakaKyoko en-aut-sei=Ishizaka en-aut-mei=Kyoko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=12 ORCID= en-aut-name=ShinShik en-aut-sei=Shin en-aut-mei=Shik kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=13 ORCID= en-aut-name=HarimaHisatomo en-aut-sei=Harima en-aut-mei=Hisatomo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=14 ORCID= en-aut-name=HiraiMasaaki en-aut-sei=Hirai en-aut-mei=Masaaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=15 ORCID= en-aut-name=MuraokaYuji en-aut-sei=Muraoka en-aut-mei=Yuji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=16 ORCID= en-aut-name=YokoyaTakayoshi en-aut-sei=Yokoya en-aut-mei=Takayoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=17 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Research Laboratory for Surface Science (RLSS), Okayama University affil-num=3 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=JST, Transformative Research-Project on Iron Pnictides (TRIP) affil-num=5 en-affil= kn-affil=JST, Transformative Research-Project on Iron Pnictides (TRIP) affil-num=6 en-affil= kn-affil=JST, Transformative Research-Project on Iron Pnictides (TRIP) affil-num=7 en-affil= kn-affil=National Institute for Material Science affil-num=8 en-affil= kn-affil=National Institute for Material Science affil-num=9 en-affil= kn-affil=Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8 affil-num=10 en-affil= kn-affil=Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8 affil-num=11 en-affil= kn-affil=Institute for Solid State Physics, The University of Tokyo affil-num=12 en-affil= kn-affil=Institute for Solid State Physics, The University of Tokyo affil-num=13 en-affil= kn-affil=Institute for Solid State Physics, The University of Tokyo affil-num=14 en-affil= kn-affil=JST, Transformative Research-Project on Iron Pnictides (TRIP) affil-num=15 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=16 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=17 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University en-keyword=Iron chalcogenide superconductor kn-keyword=Iron chalcogenide superconductor en-keyword=FeSe kn-keyword=FeSe en-keyword=Photoemission spectroscopy kn-keyword=Photoemission spectroscopy en-keyword=Band calculation kn-keyword=Band calculation END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=2 article-no= start-page=135 end-page=140 dt-received= dt-revised= dt-accepted= dt-pub-year=2012 dt-pub=201202 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Heme breakdown and ischemia/reperfusion injury in grafted liver during living donor liver transplantation en-subtitle= kn-subtitle= en-abstract= kn-abstract=Living donor liver transplantation (LDLT) requires ischemia/reperfusion (I/R), which can cause early graft injury. However, the detailed mechanism of I/R injury remains unknown. Heme oxygenase-1 (HO-1) is a rate-limiting enzyme in heme catabolism and results in the production of iron, carbon monoxide (CO), and biliverdin IXα. Furthermore, in animals, HO-1 has a protective effect against oxidative stress associated with I/R injury. However, in humans, the molecular mechanism and clinical significance of HO-1 remain unclear. We previously demonstrated that exhaled CO levels increase during LDLT, and postulated that this may indicate I/R injury. In this study, we elucidate the origin of increased exhaled CO levels and the role of HO-1 in I/R injury during LDLT. We studied 29 LDLT donors and recipients each. For investigation of HO-1 gene expression by polymerase chain reaction and HO-1 localization by immunohistological staining, liver biopsies from the grafted liver were conducted twice, once before and once after I/R. Exhaled CO levels and HO-1 gene expression levels significantly increased after I/R. In addition, HO-1 levels significantly increased after I/R in Kupffer cells. Furthermore, we found a significant positive correlation between exhaled CO levels and HO-1 gene expression levels. These results indicated that increased heme breakdown in the grafted liver is the source of increased exhaled CO levels. We also found a significant relationship between HO-1 gene expression levels and alanine aminotransferase (ALT) levels; i.e., the higher the HO-1 gene expression levels, the higher the ALT levels. These results suggest that HO-1-mediated heme breakdown is caused by I/R during LDLT, since it is associated with increased exhaled CO levels and liver damage. en-copyright= kn-copyright= en-aut-name=MatsumiJunya en-aut-sei=Matsumi en-aut-mei=Junya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MorimatsuHiroshi en-aut-sei=Morimatsu en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MatsusakiTakashi en-aut-sei=Matsusaki en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KakuRyuji en-aut-sei=Kaku en-aut-mei=Ryuji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=ShimizuHiroko en-aut-sei=Shimizu en-aut-mei=Hiroko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=TakahashiToru en-aut-sei=Takahashi en-aut-mei=Toru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=YagiTakahito en-aut-sei=Yagi en-aut-mei=Takahito kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=MatsumiMasaki en-aut-sei=Matsumi en-aut-mei=Masaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=MoritaKiyoshi en-aut-sei=Morita en-aut-mei=Kiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=Department of Anesthesiology and Resuscitology, Okayama University Medical School affil-num=2 en-affil= kn-affil=Department of Anesthesiology and Resuscitology, Okayama University Medical School affil-num=3 en-affil= kn-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=4 en-affil= kn-affil=Department of Anesthesiology and Resuscitology, Okayama University Medical School affil-num=5 en-affil= kn-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=6 en-affil= kn-affil=Faculty of Health and Welfare Science, Okayama Prefectural University affil-num=7 en-affil= kn-affil=Department of Hepato-Biliary-Pancreatic Surgery, Okayama University Medical School affil-num=8 en-affil= kn-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=9 en-affil= kn-affil=Department of Anesthesiology and Resuscitology, Okayama University Medical School en-keyword=ischemia/reperfusion injury kn-keyword=ischemia/reperfusion injury en-keyword=heme oxygenase kn-keyword=heme oxygenase en-keyword=liver damage kn-keyword=liver damage en-keyword=living donor liver transplantation kn-keyword=living donor liver transplantation END start-ver=1.4 cd-journal=joma no-vol=15 cd-vols= no-issue=3 article-no= start-page=403 end-page=410 dt-received= dt-revised= dt-accepted= dt-pub-year=2011 dt-pub=201105 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Characterization of an OmpA-like outer membrane protein of the acidophilic iron-oxidizing bacterium, Acidithiobacillus ferrooxidans en-subtitle= kn-subtitle= en-abstract= kn-abstract=An OmpA family protein (FopA) previously reported as one of the major outer membrane proteins of an acidophilic iron-oxidizing bacterium Acidithiobacillus ferrooxidans was characterized with emphasis on the modification by heat and the interaction with peptidoglycan. A 30-kDa band corresponding to the FopA protein was detected in outer membrane proteins extracted at 75A degrees C or heated to 100A degrees C for 10 min prior to sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). However, the band was not detected in outer membrane proteins extracted at a parts per thousand currency sign40A degrees C and without boiling prior to electrophoresis. By Western blot analysis using the polyclonal antibody against the recombinant FopA, FopA was detected as bands with apparent molecular masses of 30 and 90 kDa, suggesting that FopA existed as an oligomeric form in the outer membrane of A. ferrooxidans. Although the fopA gene with a sequence encoding the signal peptide was successfully expressed in the outer membrane of Escherichia coli, the recombinant FopA existed as a monomer in the outer membrane of E. coli. FopA was detected in peptidoglycan-associated proteins from A. ferrooxidans. The recombinant FopA also showed the peptidoglycan-binding activity. en-copyright= kn-copyright= en-aut-name=ManchurMohammed Abul en-aut-sei=Manchur en-aut-mei=Mohammed Abul kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KikumotoMei en-aut-sei=Kikumoto en-aut-mei=Mei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KanaoTadayoshi en-aut-sei=Kanao en-aut-mei=Tadayoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TakadaJun en-aut-sei=Takada en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KamimuraKazuo en-aut-sei=Kamimura en-aut-mei=Kazuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Division of Chemical and Biological Technology, Graduate School of Natural Science and Technology, Okayama University affil-num=5 en-affil= kn-affil=Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University en-keyword=Acidithiobacillus ferrooxidans kn-keyword=Acidithiobacillus ferrooxidans en-keyword=Iron-oxidizing bacterium kn-keyword=Iron-oxidizing bacterium en-keyword=Acidophile kn-keyword=Acidophile en-keyword=Outer membrane protein kn-keyword=Outer membrane protein en-keyword=OmpA kn-keyword=OmpA END start-ver=1.4 cd-journal=joma no-vol=41 cd-vols= no-issue=1 article-no= start-page=153 end-page=187 dt-received= dt-revised= dt-accepted= dt-pub-year=1929 dt-pub=19290131 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the bioluminescence kn-title=生物發光ニ關スル研究（其ノ1） en-subtitle= kn-subtitle= en-abstract= kn-abstract=The bioluminescence is especially interesting for physiologists in the sense that the end of the intracellular mechanism of the light producing cells is revealed by the light. Whole energy liberated by the process is represented by the light only, unmixed by other energies e. g. movement or heat. This special fact simplifies the experiment enormously, because the light intensity can be measured accurately and conveniently. Photometries used for these studies were following two, according for the purpose. a) Photographic method comparing either of the intensity grade or the diameter of the dark spot on the negative plate or film. b) Comparison method of the brightness of the light with the aid of the adjustable dark glasses (double frame detached from the Hess' differential pupilloscope). The results obtained on the Japanese firefly (Genzi-hotaru and Heike-hotaru) were summariesed as follows. 1) The light producing organ kept in exsicator could be brought to emitt light again by moisting with water, even after two years. 2) The spectrum of the light of the Japanese firefly extends continuously from the reddish orange (660μμ) to the bluish green (480μμ). 3) The intensity of the light increases by the stimulation of the light producing organ with the faradic current or by the chemicals which affect only muscle but not nerve. This phenomenon does not suggest the excitability of the organ or the presence of the exciting nerve for the organ, but can be explained by the increased supply of air by the contraction of the tracheal muscle. 4) The light extinguishes at temperature 0°--7°C., it reappears again dy warming. At the temperature over 40°C. the light becomes gradually reddish and extinguishes at 48°C-54°C. It does not reappear by cooling. The temperature coefficient for intervals 10°C. of the light intensity is 1.2-1.3. The same for the velocity of decay of light is 1.9-2.1. 5) Oxygen is indispensable to the light production of the light producing substance of firefly, which does not emit light under 1/40 atomospheric pressure of oxygen. The intensity of the light increases propotional to the oxygen pressure in the extent of 1/40 to I atomospheric pressure; over that pressure the light intensity approaches asymptotic to the maximum. Further increase of pressure beyond the maximum, also until 4-5 atomospheric pressure or even to 15 atm. pr. does not show any tendency to decrease the light intensity. 6) The light emission from the minced light producing organ of the firefly is not affected by carbon monoxide. It shows that the oxidizable substance does not combine with CO more forcible than with oxygen as haemoglobin does. 7) The light is given out, when the hot water extract from the light producing organ or the non-luminous part of the firefly or from certain animals like cocoonworm (Kaikono-Mayu) which have no light producing organ, is added to the cold water extract from the light producing organ of the firefly. 8) HCN-gas has no influence upon light production of the light producing organ or the mixture of cold water and hot water extracts from the light producing organ, the oxidation concerned with the light production by the firefly would refer to other than the oxidation connected with iron. 9) The authers measured the CO(2) production from the isolated light producing part and non-luminous part of the firefly with Osterhout's indicater method applied for the CO(2) -gas measurement of nerve fibre by Parker and came to the conclusion that the oxidation reaction does not accompany with CO(2) production, for the light producing part did not give out more CO(2)-gas than the non-luminous part. 10) The decay curve of the light emitted from the mixture of the hot water extract from non-luminous part of the firefly or from the larva of the Dendrolimus pini (Matu-Kemusi) and the cold water extract from the light producing part of the firefly indicates that the luminescent reaction in the firefly belongs to a monomolecular reaction, provided, the light intensity at any instant is assumed to be proportional to reaction velocity at that instant. 11) The velocity of the decay of the light intensity which emits from the mixture of cold and hot extract quickens by the increase of the quantity of the cold water extract of the light producing part of firefly. From this fact it seems that the cold water extract contains an enzymlike substance which hastens the luminescent reaction. On the contrary, when the quantity of the hot water extract from luminous part or non-luminous part of the firefly or from non-luminous animals increases, the light of the mixture decays slowly and lasts longer. This fact is explained by an assumption that the hot water extract lets the photogenic substance active (e. g. it sets the inactive photogenic substance combined with protein free.) and at the same time enzymlike substance becomes correspondingly inactive (e. g. by the adsorption). At the addition of the cold water extract into the cold and hot water mixture, it sometimes brightens the emitted light and sometimes lessons it. This initial flash is accounted for granting that the hot water extract acts at bravest at an optimal concentration which is proved especially in case of that from non-luminous part of the firefly. 12) The extinguished but still active cold water extract emits the light by the addition of alkali instead of the hot water extract. On the contrary, we could not let shine the hot water extract by any means. 13) Potassium bromide or erytrosin inhibits luminescence of the light mixture, but Potassium cyanide does not. 14) The active hot water extract is formed by heat from the firefly or certain non- luminous animals; i.e. by the convertion of the precursor into its efficacious form and by the destruction of material preventing the action of the active substance. Required temparature and time for this purpose is about over 3 min. at 50℃. or 15-16 min. at 100℃.. On the contrary, the active cold water extract loses its power by warming at 42°-43°C. over 3 min. 15) The active hot water extract in solution does not degenerate in half a day, and is efficacious even after a day, but the active cold water extract diminishes in power remarkably in 1-2 hours at room temperature. 16) The active component in the hot water extract passes easily through filterpaper, Chamberand filter and collodium membrane, but the active substance in the cold water extract does not filter through collodium membrane. 17) Charcoal adsorbs the active part both in hot and cold water extracts, but the latter is less adsorbed than the former. 18) Such an efficacious component as that in the active hot or cold water extract can not be extracted by alkohol or ether. en-copyright= kn-copyright= en-aut-name=HayasiKanae en-aut-sei=Hayasi en-aut-mei=Kanae kn-aut-name=林香苗 kn-aut-sei=林 kn-aut-mei=香苗 aut-affil-num=1 ORCID= en-aut-name=OkuyamaMisao en-aut-sei=Okuyama en-aut-mei=Misao kn-aut-name=奧山美佐雄 kn-aut-sei=奧山 kn-aut-mei=美佐雄 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=岡山醫科大學生理學教室 affil-num=2 en-affil= kn-affil=岡山醫科大學生理學教室 END start-ver=1.4 cd-journal=joma no-vol=76 cd-vols= no-issue=11-12 article-no= start-page=679 end-page=687 dt-received= dt-revised= dt-accepted= dt-pub-year=1964 dt-pub=19641230 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Iron Absorption in Various Blood Diseases Part III. Iron Absorption Rate of Intestinal Mucosa in Patients with Various Blood Diseases kn-title=血液疾患における鉄吸収に関する研究 第3編 血液疾患々者腸粘膜の鉄吸収能 en-subtitle= kn-subtitle= en-abstract= kn-abstract=In normal controls, essential hypochromic anemia and aplastic anemia, biopsies of the duodenal mucosa were performed for an investigation of the amount of stainable iron and iron uptake by means of radioautography. Followings are the conclusions derived from comparison of these two values. 1. The uptake of radioactive iron into the intestinal epithelium is mild in normal controls and remarkable in essential hypochromic anemia, although no differences were noted following iron treatment. Almost no iron was taken up in aplastic anemia. 2. In general, the amount of non-hemine iron in the intestinal mucosa is invertly proportional to iron absorption rate of the intestinal epithelium. This indicates that the intestinal iron absorption is influenced by the amount of intestinal tissue iron, and the intestinal epithelium, bordering the intestinal cannal, plays an important role in the initial stage of the iron absorption. en-copyright= kn-copyright= en-aut-name=TsuchidaJunichiro en-aut-sei=Tsuchida en-aut-mei=Junichiro kn-aut-name=土田潤一郎 kn-aut-sei=土田 kn-aut-mei=潤一郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科 END start-ver=1.4 cd-journal=joma no-vol=76 cd-vols= no-issue=11-12 article-no= start-page=655 end-page=663 dt-received= dt-revised= dt-accepted= dt-pub-year=1964 dt-pub=19641230 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Iron Absorption in Various Blood Diseases Part 1. Histopathological Observations in Patients with Various Blood Diseases by Intestinal Biopsy kn-title=血液疾患における鉄吸収に関する研究 第1編 血液疾患々者の腸粘膜生検による病理組織学的観察 en-subtitle= kn-subtitle= en-abstract= kn-abstract=In normal controls and patients with various blood diseases, biopsies of the duodenal mucosa were performed for an investigation of histopathological changes and their relation to intestinal iron absorption. Followings are the results. 1. In essential hypochromic anemia, leukemia, and anemia associated with cancer, inflammatory changes were observed, and in a case of acute myelogenous leukemia, infiltration of immature myelogenous cells was observed. 2. Little inflammatory changes were noted in aplastic anemia, suggesting that histological changes in the intestinal mucosa are not related at least to the genesis of this disease. 3. In a case of hookwarm anemia, remarkable inflammatory changes were noted, suggesting the presence of disturbances in the intestinal iron absorption as one of the causes of this anemia. 4. No significant histological changes were observed in myxedema, Mikulicz syndrome, purpura simplex, and pernicious anemia. 5. The above investigations suggest that inflammatory changes of the intestinal mucosa generally have some influences on the iron absorption. en-copyright= kn-copyright= en-aut-name=TsuchidaJunichiro en-aut-sei=Tsuchida en-aut-mei=Junichiro kn-aut-name=土田潤一郎 kn-aut-sei=土田 kn-aut-mei=潤一郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科 END start-ver=1.4 cd-journal=joma no-vol=66 cd-vols= no-issue=12 article-no= start-page=2611 end-page=2628 dt-received= dt-revised= dt-accepted= dt-pub-year=1954 dt-pub=19541230 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Hypoplastic Anemia (panmyelopathy); (Mainly depending on our departmental experiences) kn-title=汎骨髓病（再生不良性貧血）について―教室の経験を中心として― en-subtitle= kn-subtitle= en-abstract= kn-abstract=In Japan, hypoplastic anemia has ever been presenting one of the most important problems among today's anemic diseases, it having proved as great frequency as that of pernicious anemia found both in Europe and America; besides, no fit therapeutic method been discovered as yet. Generally speaking, this disease shows a decrease of entire corpuscles, the bleeding tendency becoming prevalent in most cases; yet as to signs in concern to bone marrow, the number of nuclear cell is not fixed, as it has proved 16, 200 at the lowset, while, 263, 000 at the highest. Consequently, it has been classified into 5 types in our department, in view to obstructions of bone marrow. 1. Type of bloodcell-arrest. 2. Type of maturation-arrest. 3. Type of disturbanced regeneration. 4. Mixed type. 5. Panmyelophthisis. When we took record about 23 cases of hypoplastic patients, results were as follows; 1st type 7, 2nd type 2, 3rd type 3, 4th type 8, and 3 cases of 5th type. In all serum iron value proved an increase; in view to intravenous iron tolerance test, the degree of iron disappearance proved a marked delay, while hematopoetic function indicated an extreme decline. In tissue culture of bone marrow invented by our department. it has been recognized that there exists certain factor to inhibit any hyperplasia of parencyma of bone marrow in this anemic serum. As for method in therapy, several have been nominated through in vain, so that more or less effect have been achieved only by our inventions, i.e., imbedding of bone marrow as well as use of substances of polysaccharide extracted from bone marrow. en-copyright= kn-copyright= en-aut-name=OkamotoTadashi en-aut-sei=Okamoto en-aut-mei=Tadashi kn-aut-name=岡本正 kn-aut-sei=岡本 kn-aut-mei=正 aut-affil-num=1 ORCID= en-aut-name=OkanoTakuya en-aut-sei=Okano en-aut-mei=Takuya kn-aut-name=岡野卓也 kn-aut-sei=岡野 kn-aut-mei=卓也 aut-affil-num=2 ORCID= en-aut-name=SaitoTetsuro en-aut-sei=Saito en-aut-mei=Tetsuro kn-aut-name=齊藤哲郎 kn-aut-sei=齊藤 kn-aut-mei=哲郎 aut-affil-num=3 ORCID= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name=木村郁郎 kn-aut-sei=木村 kn-aut-mei=郁郎 aut-affil-num=4 ORCID= en-aut-name=TanakaMotosuke en-aut-sei=Tanaka en-aut-mei=Motosuke kn-aut-name=田中基介 kn-aut-sei=田中 kn-aut-mei=基介 aut-affil-num=5 ORCID= en-aut-name=YamashitaMiyokichi en-aut-sei=Yamashita en-aut-mei=Miyokichi kn-aut-name=山下三代吉 kn-aut-sei=山下 kn-aut-mei=三代吉 aut-affil-num=6 ORCID= en-aut-name=ShindoTsutomu en-aut-sei=Shindo en-aut-mei=Tsutomu kn-aut-name=進藤勉 kn-aut-sei=進藤 kn-aut-mei=勉 aut-affil-num=7 ORCID= en-aut-name=KuninobuMasuhiro en-aut-sei=Kuninobu en-aut-mei=Masuhiro kn-aut-name=国延益弘 kn-aut-sei=国延 kn-aut-mei=益弘 aut-affil-num=8 ORCID= en-aut-name=TominagaHiroshi en-aut-sei=Tominaga en-aut-mei=Hiroshi kn-aut-name=富永弘 kn-aut-sei=富永 kn-aut-mei=弘 aut-affil-num=9 ORCID= en-aut-name=IshidaToyoshige en-aut-sei=Ishida en-aut-mei=Toyoshige kn-aut-name=石田豊重 kn-aut-sei=石田 kn-aut-mei=豊重 aut-affil-num=10 ORCID= en-aut-name=TakedaToshiteru en-aut-sei=Takeda en-aut-mei=Toshiteru kn-aut-name=武田俊輝 kn-aut-sei=武田 kn-aut-mei=俊輝 aut-affil-num=11 ORCID= en-aut-name=NumamotoTetsuro en-aut-sei=Numamoto en-aut-mei=Tetsuro kn-aut-name=沼本徹郎 kn-aut-sei=沼本 kn-aut-mei=徹郎 aut-affil-num=12 ORCID= en-aut-name=KotakemoriYasuo en-aut-sei=Kotakemori en-aut-mei=Yasuo kn-aut-name=小武守靖 kn-aut-sei=小武 kn-aut-mei=守靖 aut-affil-num=13 ORCID= en-aut-name=NakayamaAkio en-aut-sei=Nakayama en-aut-mei=Akio kn-aut-name=中山章壮 kn-aut-sei=中山 kn-aut-mei=章壮 aut-affil-num=14 ORCID= en-aut-name=HoenSachihiko en-aut-sei=Hoen en-aut-mei=Sachihiko kn-aut-name=方円幸彦 kn-aut-sei=方円 kn-aut-mei=幸彦 aut-affil-num=15 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=2 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=3 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=4 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=5 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=6 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=7 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=8 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=9 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=10 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=11 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=12 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=13 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=14 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=15 en-affil= kn-affil=岡山大学医学部平木内科 END start-ver=1.4 cd-journal=joma no-vol=66 cd-vols= no-issue=12 article-no= start-page=2409 end-page=2412 dt-received= dt-revised= dt-accepted= dt-pub-year=1954 dt-pub=19541230 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=2 or 3 Surveys on the Bile Pigment Metabolism in Time Suffering from Acatalasenemia kn-title=無カタラーゼ血液症における胆汁色素代謝の2，3の検討 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Certain examinations were done from the aspect of bile pigment metabolism on those people within whose blood there is found almost no catalase, which has resulted as follows: 1. As the hemoglobin quantity estimated for the patient in this disease proving normal, and urinal propendyopent negative, it would not be perfectly true to say that the physical significance for intra-blood-cell catalase serves only as antidestruction due to hemoglobin against H2O2 that has been produced when oxidation in vivo has taken place. 2. In the process to turn bile pigment out of hemoglobin in vitro, when catalase should be in lack, the production of verdohemoglobin feels urged, attaining its height quickly; which, in turn urges a decrease that would happen following it. 3. In the above-mentioned experiment in vitro, generally, l-ascorbic acid helps in main in the production of verdohemoglobin on its initial reaction; successively, participating with velocity toward its destruction, at the brink where verdohemoglobin has reached its top value. 4. The amount respectively of easily split off blood iron, serum iron, as well as blood bilirubin in the tested person's blood, has indicated normal value. Consequently, if it would be surmised from such standpoint as bilirubin metabolism, persons without catalase in their blood might be deemed to be healthy. en-copyright= kn-copyright= en-aut-name=KosakaKiyowo en-aut-sei=Kosaka en-aut-mei=Kiyowo kn-aut-name=小坂淳夫 kn-aut-sei=小坂 kn-aut-mei=淳夫 aut-affil-num=1 ORCID= en-aut-name=ShimamuraTokuichi en-aut-sei=Shimamura en-aut-mei=Tokuichi kn-aut-name=島村篤一 kn-aut-sei=島村 kn-aut-mei=篤一 aut-affil-num=2 ORCID= en-aut-name=HitomiYasushi en-aut-sei=Hitomi en-aut-mei=Yasushi kn-aut-name=人見泰 kn-aut-sei=人見 kn-aut-mei=泰 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 affil-num=2 en-affil= kn-affil=岡山大学医学部第一内科教室 affil-num=3 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=66 cd-vols= no-issue=11 article-no= start-page=2289 end-page=2307 dt-received= dt-revised= dt-accepted= dt-pub-year=1954 dt-pub=19541130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=STATISTICAL OBSERVATION ON 28 CASES OF HYPOP-LASTIC ANEMIA. (PANMYELOPATHIA) kn-title=汎骨髓病症（再生不良性貧血）28例の統計的観察 en-subtitle= kn-subtitle= en-abstract= kn-abstract=We have taken observations on 28 cases of Panmyelopathia, all of which belonged to inpatients of our dept., statistically and clinically; results were as follows:- There were found no definite co-relations either iu age, sex. or by occupation; except 1 case of chronic X-Ray injury; for conscious symptoms, facial paleness was found almost inevitably, while fever, general languor, and palpitation were discovered to succeed it; as for the bleeding, in main it was wont to appear in the form of gingival bleeding, epistaxis, or ecchymosis; for symptoms that were discovered by others, red-cell sedimentation rate was found to be stimulated, in total cases, and such as lengthened bleeding time, anemic cardiac murmurs, together with changes in the eye ground, was recognizable in most cases. Among the blood figure. number of red cells was seen to be about a million or so in majority of cases; while, figures below 1 million was considered to point at serious prognosis. As to hemoglobin content, in most cases, it occupied 20% or so; in respect to hemoglobin index, most of them indicated a hyperchrom, over the entire process, or in partial process. In most cases, the numher of leucocytes proved to be short of 4000, which was also supposed to keep much co-relation with the prognosis. In view to differentiation of lencocytes, a decrease of grauulocytes, an increase of lymphocytes appeared, and in general, in deceased cases, lymphocytosis was clearly observed. Number of blood platelet were apt to decrease to a certain extent. Number of reticulocytes was seen to be small in majority of cases, but it would seem unreasonable to refer to it for the state of prognosis. Heinz' body proved, in serious cases, a value pretty nigh to 1, 000‰, showing a great difference with that, belonging to another sort of anemic diseases, as well as people in healthy condition. No special phase was foundin the myelogramm; in respective disease, various apperances of hematopoetic functions observed. The disease could generally be divided into following 5 types. I. Type of bloodcell-arrest. II. Type of maturation-arrest III. Type of disturbanced regeneration. IV. Mixed type. V. Panmyelophthisis. By dint of Tissue Culture of bone marrow. it has been supposed that there existed certain factor that inhibited growth of parenchyma of bone marrow directly; moreover, the functions of bone marrow have suffered a marked hindrance; Having examined respiration and glycolysis in bone marrow, it was discovered that with type of blodcell-arrest, it has proved normal; with other typs, proved considerablly low value. Its sideroblastogram proved slightly to shift to the right. Generally in most cases, gastric juice showed certain hypoacidity. Among the circulatory system, no unique quality discovered, while the rise in serum iron value was seen, owing to extreme decrease of hematopoetic function. Amongst urine and cerebrospinal fluid, some anemia-causing substance has been detected. As for sugar metabolism, rate for normal and abnormal stood almost the same; while as for the basal metabolism, there was discovered some abnormality. The function test of autonomic nervous system, also showed much abnormality. As to histological view, a high degree atrophy was discovered in hematopoetic tissue, with a marked bleeding tendency. en-copyright= kn-copyright= en-aut-name=OkamotoTadashi en-aut-sei=Okamoto en-aut-mei=Tadashi kn-aut-name=岡本正 kn-aut-sei=岡本 kn-aut-mei=正 aut-affil-num=1 ORCID= en-aut-name=NumamotoTetsuro en-aut-sei=Numamoto en-aut-mei=Tetsuro kn-aut-name=沼本徹郎 kn-aut-sei=沼本 kn-aut-mei=徹郎 aut-affil-num=2 ORCID= en-aut-name=TamuraHajime en-aut-sei=Tamura en-aut-mei=Hajime kn-aut-name=田村甫 kn-aut-sei=田村 kn-aut-mei=甫 aut-affil-num=3 ORCID= en-aut-name=OkanoTakuya en-aut-sei=Okano en-aut-mei=Takuya kn-aut-name=岡野卓也 kn-aut-sei=岡野 kn-aut-mei=卓也 aut-affil-num=4 ORCID= en-aut-name=KitayamaMinoru en-aut-sei=Kitayama en-aut-mei=Minoru kn-aut-name=北山稔 kn-aut-sei=北山 kn-aut-mei=稔 aut-affil-num=5 ORCID= en-aut-name=TakedaKatsumi en-aut-sei=Takeda en-aut-mei=Katsumi kn-aut-name=武田勝美 kn-aut-sei=武田 kn-aut-mei=勝美 aut-affil-num=6 ORCID= en-aut-name=TsushimaMakoto en-aut-sei=Tsushima en-aut-mei=Makoto kn-aut-name=津島允 kn-aut-sei=津島 kn-aut-mei=允 aut-affil-num=7 ORCID= en-aut-name=NakatsukaGinta en-aut-sei=Nakatsuka en-aut-mei=Ginta kn-aut-name=中塚銀太 kn-aut-sei=中塚 kn-aut-mei=銀太 aut-affil-num=8 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=2 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=3 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=4 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=5 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=6 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=7 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=8 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=67 cd-vols= no-issue=1 article-no= start-page=137 end-page=164 dt-received= dt-revised= dt-accepted= dt-pub-year=1955 dt-pub=19550131 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Experimental and Clinical Study on the Bone Marrow Transplantation Part 2: The Co-relation between the recovery of experimental anemia due to bone marrow transplantation, iron metabolism and function of reticuloendothelial system kn-title=骨髓埋沒に関する実験的並に臨床的研究 第2編 骨髓埋沒による実験的貧血の恢復と鉄代謝及び網内系機能との関係 en-subtitle= kn-subtitle= en-abstract= kn-abstract=By inducing anemia in animals by such means as; blood-letting, phenylhydrazin injection, benzol injection, X-ray irradiation, kollargol injection, or anchylostoma; then, by performing Prokg. 0.5g bone marrow transplantation for those animals, obtatined results as follows: 1) The bone marrow transplantation has power to stimulate recovery from anemia; on that time, serum iron quantity proves a decrease, while function of reticuloendothelial system proves either excessive, or in case showing low, has room to be stirred up to recovery. 2) In general, the recovery of serum iron quantity to normal value is apt to be delayed compared to that of anemia 3) In kollargol anemic dog, the quantity of serum iron shows a marked increase. 4) The function of reticuloendothelial system with anchylostoma anemia shows a remarkable excitement, anemia cannot be recovered by sole bone marrow transplantation: it has not been recovered until helmintics has been employed; In case bone marrow transplantation and helmintic use have been performed at the same time, the blood cells keeps on to increase even after the recovery of anemia. en-copyright= kn-copyright= en-aut-name=OkanoTakuya en-aut-sei=Okano en-aut-mei=Takuya kn-aut-name=岡野卓也 kn-aut-sei=岡野 kn-aut-mei=卓也 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=67 cd-vols= no-issue=1 article-no= start-page=115 end-page=135 dt-received= dt-revised= dt-accepted= dt-pub-year=1955 dt-pub=19550131 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Experimental and Clinical Study on the Bone Marrow Transplantation Part 1: Co-relation between the shift of blood picture due to the bone marrow transplantation, iron metabolism and function of reticuloendothelial system kn-title=骨髓埋沒に関する実験的並に臨床的研究 第1編 骨髓埋沒による血液像の変動と鉄代謝及び網内系機能との関係 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Increase of blood cells, decrease of serum iron quantity and a slight degree of over-function of reticuloendothelial system will be induced, by transplantating some suitable amount (Prokg. 0.5g) of bone marrow in a dog's subfascia of femur. This has been caused in urging to utilize the accumulated iron owing to promotion of hematopoetic fanction; if we investigate it about organic iron, when the blood showing an increase, ferritin in the spleen showed a tendency toward decrease, but the deposits of hemosiderin in tissue has proved little alteration from its normal state, Contrary to this, any decrease in serum iron observed under infected state, would rightly be ascribed to the retained stock of iron due to excessive function of reticuloendothelial system, due to protecting infection; esp., what comes from the absorption and deposits of hemosiderin produced along with excited breakage of hemoglobin, or resulted from imperfect utilization of iron, in hematopoetic organs; so that, there is seen certain essential differences between the excessive function of reticulo endothelial system when hematopoetic organs is stimulated, and decrease in serum iron; further, on occasion when hematopoetic function is urged according to the bone marrow transplantation, we could realize that a close connection exists between the iron metabolism and function of reticuloendothelial system: at the same time, could verify partly the mechanism in creating blood cells the occasion. en-copyright= kn-copyright= en-aut-name=OkanoTakuya en-aut-sei=Okano en-aut-mei=Takuya kn-aut-name=岡野卓也 kn-aut-sei=岡野 kn-aut-mei=卓也 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科 END start-ver=1.4 cd-journal=joma no-vol=67 cd-vols= no-issue=1 article-no= start-page=85 end-page=105 dt-received= dt-revised= dt-accepted= dt-pub-year=1955 dt-pub=19550131 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Experimental Studies on the Pathogenesis of Hypoplastic Anemia (Panmyelopathia.) Part 3: Experimental studies of the developmental mechanism of anemia kn-title=再生不良性貧血（汎骨髓病症）の本態に関する研究 第三編 貧血の発生機転に関する実験的研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Having performed various experiments about rabbits of experimental anemia, in order to clarify causes of anemia, by injection of anemia-producing substance, obtained results as follows: 1) As to spleen-extirpated rabbit, it has incurred anemia by injection of serum. 2) The same would take place in case of liver-disturbed rabbit, due to serum injection. 3) No anemia was observed with the same injection, when the reticuloendothelial system was blocked with Indian ink. 4) Injecting the serum at a, nutricia femoris, and investigating the blood picture at v, nutricia femoris discovered a marked decrease both in the number of erythrocytes as well as leucocytes 2 hours later. 5) The serum iron value has proved a rise at the maximum anemic stage, in the successive injection. 6) The myelogram of the rabbit in case of successive injection, indicated a picture of maturation-arrest. 7) By all these facts stated above, it might be said, as for the factor to renderrabbit anemic, blood cell-arrest within bone marrow could be considered on one side, while the disturbance in the parenchym of the bone marrow might be imagined on the other. en-copyright= kn-copyright= en-aut-name=IkedaTakashi en-aut-sei=Ikeda en-aut-mei=Takashi kn-aut-name=池田隆 kn-aut-sei=池田 kn-aut-mei=隆 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=68 cd-vols= no-issue=11 article-no= start-page=2055 end-page=2074 dt-received= dt-revised= dt-accepted= dt-pub-year=1956 dt-pub=19561130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Experimental Study on the Anemia after Total Gastrectomy II. Report: On the Fluctuation of the hematopoietic Substances in the liver and therapeutic Effects to the Rats Schowing Anemia after Gastrectomy, and on the Tissue Pictures on the liver kn-title=無胃性貧血に関する実験的研究 第2編 広汎胃切除後における白鼠の肝臓内造血物質の消長及び術後貧血鼠に対する治療効果. 貧血鼠の肝組織像について en-subtitle= kn-subtitle= en-abstract= kn-abstract=Since Minot and Murphy (1926) could not trace the effective substance in liver therapy for pernicious anemia, it was recently found that Vitamin B. 12, Folic Acid were effective for macrocytic and pernicious anemia, and that Vitamin B. 12 would act as so-called Castle's extrinsic factor. Welch and others clarified that in the patient of pernicious anemia there was an impediment, of absorption of Vitamin B. 12, and Kusunoki reported that there were in want of Vitamin B. 12 and Folic Acid at the time of macrocytic and pernicious anemia occurring after total gastrectomy in man. There are few reports on the fluctuation of those Vitamins in the animal after total gastrectomy. The author determined the Vitamin B. 12, Folie Acid and Non-Hemin Iron in the rats' liver after total resection of the stomach. There is a slight decrease of Vitamin B. 12 and Folic Acid after operation but is no significant value for the clarification of the anemia. Non-Hemin Iron shows considerable decrease. There were no effects of Vitamin B.12, Folic Acid, Liver Extract excepting Iron for the treatment of anemia in gastrectomized rats. Although, the restoration of erythrocytes was not sufficient by the Iron treatment alone, Iron with Vitamin B. 12, Folic Acid, esp. Liver extract was most effective for it. The liver tissue of gastrectomized rats showed degeneration and necrosis of the cells in the center part of acinus. Central necrosis of the lobules and increase of fat were marked in the emaciated and bad-conditioned rats. It has been thought that the facts were not concerned with elapse of time after operation but with the nutritional defect after total gastrectomy. Anemia in gastrectomized rats is largely due to the impediment of absorption of iron because of the absence of gastric juice. The author has thought that the anemia increased in accordance with liver damage due to the nutritional disturbance and ascending of intestinal flora producing toxin. en-copyright= kn-copyright= en-aut-name=MatsumotoMasahiro en-aut-sei=Matsumoto en-aut-mei=Masahiro kn-aut-name=松本正宏 kn-aut-sei=松本 kn-aut-mei=正宏 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部津田外科教室 END start-ver=1.4 cd-journal=joma no-vol=68 cd-vols= no-issue=11 article-no= start-page=2039 end-page=2054 dt-received= dt-revised= dt-accepted= dt-pub-year=1956 dt-pub=19561130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Experimental Study on the Anemia after Total Gastrectomy I. Report: On the Peripheral Blood Picture and Bone Marrow Picture kn-title=無胃性貧血に関する実験的研究 第1編 広汎胃切除後における白鼠の末梢血液像及び骨髄像について en-subtitle= kn-subtitle= en-abstract= kn-abstract=Many had been said, from olden times, on the relation between digestive organ (esp. stomach) and hematopoiesis, and it has been much clarified in appreciation of the discovery of liver therapy for pernicious anemia by Minot and Murphy (1926), the dissertation of the in-and extrinsic factors theory by Castle and Townsend (1929), and of the studies of many other authorities. The atrophy of the stomach is responsible for the occurrence of anemia and it has been reported that the microcytic or pernicious anemia had often been observed after total gastrectomy in man. But in the animal there were no report of cases of pernicious anemia after total gastrectomy. The author has performed the animal experiment in rats, after resecting the right portion of stomach as Jacobson etc. had done and also the left portion of the stomach. That has been resulted the lack of storage and stirring of diet. In these rats were observed the blood picture of peripheral and of bone marrow for 400 days after operation. Results obtained as follows: 1) Gastrectomized rats gain in weight little in general, and the one losing weight dies earlier. The ocular conjunctiva changes in white and glistening of hair will be lost a little. Activity will be minimized and they show a tendency to have loose bowels. 2) Hemoglobin decreases highly and rapidly in relativly early postoperative days and redcell count drops gradually. Color index decreases and immature red cells increase in number, but leucocytes show no marked differential abnormalities in spite of increasing in number. 3) Normoblasts, esp. basophilic and polychromatic, increase in the bone marrow but it is mostly microcytic showing hindrance on ripening of erythrocytes. The author summarizes that the agastric anemia in rats is hypochromic and microcytic in nature without no exceptions and shows iron deficiency anemia. en-copyright= kn-copyright= en-aut-name=MatsumotoMasahiro en-aut-sei=Matsumoto en-aut-mei=Masahiro kn-aut-name=松本正宏 kn-aut-sei=松本 kn-aut-mei=正宏 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部津田外科教室 END start-ver=1.4 cd-journal=joma no-vol=68 cd-vols= no-issue=11 article-no= start-page=1999 end-page=2006 dt-received= dt-revised= dt-accepted= dt-pub-year=1956 dt-pub=19561130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Structure of Cytoplasmic Basophilia II. Studies on Minerals in Cells with Special References to Cytoplasmic Basophilia kn-title=細胞質好塩基性物質の研究 第2編 顕微灰化法による細胞質無機物の検出特にRNA含有体と無機物との関係 en-subtitle= kn-subtitle= en-abstract= kn-abstract=In the previous paper, the author reported that the cytoplasmic basophilia appears fibrous or granular by the dehydrating mechanism or by the action of RNA-precpitating agents. The purpose of this paper is to investigate the relation of minerals to cytoplasmic basophilia by means of microincineration, and also to distinguish clearly each minerals from others by alizallin or ferrocyan kalium stain after the coating with egg-white. In the nerve cells and the egg cells of pinctada maltensii treated by agglutinating agents of basophilia, mineral ash appeared showing the similar picture like as Nissl-body or giving fibrous mesh work, while on the cytoplasm which basophilia was not agglutinated, careful fixation with formalin or freezing drying, mineral ash appeared homogenous on cytoplasm. The mass of mineral ash which appeared in cytoplasm seemed to be in proportion to the quantity of nucleic acid, i. e. a quantity of mineral ash was recognized in the cytoplasm that showed strong basophilicity, and in the cytoplasm that showed weak basophilicity a small quantity of meneral ash was detected. From these observations, it was concluded that mineral ash detected in cytoplasm must be a component of basophilic organella but not of enkylema. Alizallin staining of the ash proved that mineral ash was mainly composed of calcium or magnecium. Treating with acid ferrocian kalium, however, a small amount, of iron was detected in ash too, i. g. liver cells, nucleus of granular cells in cerebellum, red cells, capsuls of liver or kidney, basement membrane and Bowman's capsule stained blue slightly by ferrocyan kalium. en-copyright= kn-copyright= en-aut-name=KandaSaburo en-aut-sei=Kanda en-aut-mei=Saburo kn-aut-name=神田三郎 kn-aut-sei=神田 kn-aut-mei=三郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部病理学教室 END start-ver=1.4 cd-journal=joma no-vol=69 cd-vols= no-issue=12 article-no= start-page=3037 end-page=3052 dt-received= dt-revised= dt-accepted= dt-pub-year=1957 dt-pub=19571231 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Experimental studies on the metabolism of erythrocytes of acatalasemia patients Report 2 The influences of various substances on the oxygen consumption of erythrocytes both in acatalasemia patients and the normal kn-title=無カタラーゼ血液症患者の赤血球代謝に関する実験的研究 第2編 無カタラーゼ血液症患者及び健康人の赤血球酸素消費に及ぼす数種物質の影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract=By examining the influences of protoporphyrin and of four kinds of metal ions, namely, those of iron, zinc, magnesium, and manganese, and the influences of glucose, lactate, glycerophosphate, acetate, pyruvate, glutamate, succinate, fumarate, malate, and aspartate, methylene blue and DPN, on the oxygen consumption of erythrocytes both in acatalasemia patients and the normal, and by further spectroscopic studies on the changes of the hemoglobin accompanying the respiration of erythrocytes when malate and aspartate of these had been used as substrates, the author reached the following conclusions: namely, in the respiration of erythrocytes of these patients as compared with the normal, no marked difference other than a comparatively weaker enzymatic action of malic dehydrogenase and the enzymes concerning aspartic acid oxidation can be recognized; and as for the disposal of small amounts of H(2)O(2) supposedly to be liberated during respiration of erythrocytes, the compensation by peroxidase, hemoglobin, or other hemin proteins may be thought to be sufficient. en-copyright= kn-copyright= en-aut-name=YoshidaKiyoaki en-aut-sei=Yoshida en-aut-mei=Kiyoaki kn-aut-name=吉田清明 kn-aut-sei=吉田 kn-aut-mei=清明 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部微生物学教室 END start-ver=1.4 cd-journal=joma no-vol=69 cd-vols= no-issue=9 article-no= start-page=2275 end-page=2290 dt-received= dt-revised= dt-accepted= dt-pub-year=1957 dt-pub=19570930 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Experimental Study on the Agastric Anemia with Concomitant Splenectomy Part III. On the Fluctuation of Intestinal Microrganisms in the Anemic Rats after Operation, Tissue Culture of the Bone Marrow and Therapeutic Effect of the Antianemic Preparates kn-title=同時脾剔除を伴える無胃性貧血に関する実験的研究 第3編 胃広汎切除及び同時脾剔出後における貧血白鼠の，腸内細菌相，骨髄体外組織培養，及び治療効果について en-subtitle= kn-subtitle= en-abstract= kn-abstract=It has been reported that the absence of hydrochloric acid after total gastrectomy caused a change in H-iron concentration in the digestive canal; inversion of acid into alkali. It resulted ascending and proliferation of coli bacilli into the proximal portion of small intestine. The author has studied the above-described facts, and also performed the tissue culture of the bone marrow of femul to see the function in anemic rats, and observed the therapeutic effect of antianemic substances on the anemic rats. 1) Intestinal Microrganisms In the normal rats every case showed coli bacilli in the duodenum but they were less in number and mostly lactic bacilli have occupied over 1/2 of the bacilli in the whole intestinal canal. In accordance with the inversion of acid into alkali in the intestinal canal after operation the coli bacilli have ascended and proliferated into the upper part of intestinal canal. Lactic bacilli, on the contrary, have disappeared in the proximal intestinal canal and become markedly less in number in the whole intestinal canal. 2) Tissue Culture of Bone Marrow It was observed that the comparative growth index and cellmigration velocity diminished, but the enlarging of growth area and cell-migration were not observed to stop at an early stage as in the control group; It did not show marked but moderate dysfunction. 3) Efficacies of V-B(12), Folic Acid and Iron Preparates V-B(12) and folic acid were noneffective but iron preparates reacted well to the anemia and restored the blood picture as that in the rats before operation, especially the restoration of hemoglobin level. The general condition was improved completely corresponding its restoration. en-copyright= kn-copyright= en-aut-name=IwasaYuzo en-aut-sei=Iwasa en-aut-mei=Yuzo kn-aut-name=岩佐雄三 kn-aut-sei=岩佐 kn-aut-mei=雄三 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部津田外科教室 END start-ver=1.4 cd-journal=joma no-vol=69 cd-vols= no-issue=9 article-no= start-page=2261 end-page=2273 dt-received= dt-revised= dt-accepted= dt-pub-year=1957 dt-pub=19570930 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Experimental Study on the Agastric Anemia with Concomitant Splenectomy Part II. Fluctuation of V-B(12), Folic Acid, Serum Iron and Non-Hemin Iron in the Liver of Postoperative Anemic Rats kn-title=同時脾剔除を伴える無胃性貧血に関する実験的研究 第2編 胃広汎切除及び同時脾剔出後における貧血白鼠の，肝臓内V-B(12)，葉酸，Non-hemin鉄，及び血清鉄について en-subtitle= kn-subtitle= en-abstract= kn-abstract=Since discoveries of V-B(12) and folic acid, it was found that they were effective for the macrocytic and pernicious anemia. They were also effective and improved the blood picture of permicious anemia caused by agastric anemia. Iron preparates have been known to be effective for the anemia for a long period. The author has determined V-B(12), folic acid and Non-Hemin iron in the Liver, in which they were stored in greater amount, and also determined the serum iron on that occasion. 1) V-B(12) and Folic Acid, There were no significant differences, only showing slight decrease in amount. 2) Non-Hemin Iron and Serum Iron: There was a considerable decrease. The anemia, that is, has been proved to be iron deficiency anemia. en-copyright= kn-copyright= en-aut-name=IwasaYuzo en-aut-sei=Iwasa en-aut-mei=Yuzo kn-aut-name=岩佐雄三 kn-aut-sei=岩佐 kn-aut-mei=雄三 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部津田外科教室 END start-ver=1.4 cd-journal=joma no-vol=69 cd-vols= no-issue=8 article-no= start-page=2169 end-page=2173 dt-received= dt-revised= dt-accepted= dt-pub-year=1957 dt-pub=19570830 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Iron and Copper Metabolisms in Hookworm Anemia kn-title=鉤虫症貧血に於ける血清鉄,銅量並びに臓器銅の態度 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The authors studied the iron and copper metabolisms in dogs and patients with hookworm anemia, and obtained the following results. 1) In hookworm anemia, serum iron was low in a parallel correlation with the severity of anemia as other iron deficiency anemias. Hookworm anemia, however, was different from other iron deficiency anemias in that it was accompanied by the reduction of serum copper in severe cases. Thus, Fe/Cu was also lower. 2) In the treatment of hookworm with vermicide, serum iron and copper together with Fe/Cu were restored first and afterwards followed the recovery of anemia. 3) The amount of tissue copper of animals increased in the cases of dog with hookworm anemia and in the cases of rabbit being intravenously injected with serum of dog with hookworm anemia. The increase was obvious in the liver and spleen. en-copyright= kn-copyright= en-aut-name=KitazimaKazuo en-aut-sei=Kitazima en-aut-mei=Kazuo kn-aut-name=喜多島和男 kn-aut-sei=喜多島 kn-aut-mei=和男 aut-affil-num=1 ORCID= en-aut-name=SogawaTamotsu en-aut-sei=Sogawa en-aut-mei=Tamotsu kn-aut-name=十川保 kn-aut-sei=十川 kn-aut-mei=保 aut-affil-num=2 ORCID= en-aut-name=NaitoTakakazu en-aut-sei=Naito en-aut-mei=Takakazu kn-aut-name=内藤孝和 kn-aut-sei=内藤 kn-aut-mei=孝和 aut-affil-num=3 ORCID= en-aut-name=AsanoKenwo en-aut-sei=Asano en-aut-mei=Kenwo kn-aut-name=浅野健夫 kn-aut-sei=浅野 kn-aut-mei=健夫 aut-affil-num=4 ORCID= en-aut-name=HondaSeiken en-aut-sei=Honda en-aut-mei=Seiken kn-aut-name=本多正憲 kn-aut-sei=本多 kn-aut-mei=正憲 aut-affil-num=5 ORCID= en-aut-name=SuizuAkira en-aut-sei=Suizu en-aut-mei=Akira kn-aut-name=水津昭 kn-aut-sei=水津 kn-aut-mei=昭 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=2 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=3 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=4 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=5 en-affil= kn-affil=岡山大学医学部平木内科教室 affil-num=6 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=69 cd-vols= no-issue=7 article-no= start-page=1813 end-page=1825 dt-received= dt-revised= dt-accepted= dt-pub-year=1957 dt-pub=19570731 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Sideroblasts Part 3 The Iron Metabolism of Erythroblasts kn-title=Sideroblastに関する研究 第三編 赤芽球と鉄代謝 en-subtitle= kn-subtitle= en-abstract= kn-abstract=By creating various changes mainly in erythroblasts of adult rabbits and by administering iron to these animals, changes in the proportion of sideroblasts have been studied comparatively; and the iron intake by erythroblasts has been examined. The following are the results of the study: 1) There seems to be a limitation in the iron intake by erythroblasts, namely, the iron intake is not solely dependent on the quantity of iron supplied by serum, but also it is influenced greatly by the quantity of nonhemoglobin iron controlled by the amounts of hemoglobin in the erythroblasts matured to a certain stage. 2) It is believed that the mechanism of iron intake is of a relatively simple nature something like diffusion, i.e., the degrees of concentration of the amounts of iron supplied by serum on one side and nonhemoglobin iron in erythroblasts on the other side, of the cellwall. 3) In erythroblasts, three steps of the metabolic process, namely, intake, retention and utilization of iron, essentially take place almost simultaneously, mainly in the later maturation phase. en-copyright= kn-copyright= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name=木村郁郎 kn-aut-sei=木村 kn-aut-mei=郁郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科 END start-ver=1.4 cd-journal=joma no-vol=69 cd-vols= no-issue=7 article-no= start-page=1799 end-page=1812 dt-received= dt-revised= dt-accepted= dt-pub-year=1957 dt-pub=19570731 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Sideroblasts Part 2 Sideroblasts and Bone Marrow Functions (Experimental Anemias) kn-title=Sideroblastに関する研究 第二編 骨髄機能（実験的貧血）とSideroblast en-subtitle= kn-subtitle= en-abstract= kn-abstract=Various experimental anemias have been induced in adult rabbits mainly centering around the hematopoietic functions of the bone marrow; and with continuous observations on the changes of sideroblasts, a series of comparative studies between the sideroblasts and serum iron has been carried out; and obtained the follwing results: 1) The proportion of sideroblasts in normal rabbits is lower and the extent of the sideroblast appearance less extensive than that in the normal persons. 2) The proportion of sideroblasts increases in such anemias where there is a decline in the erythropoietic function as in benzol, collargol, x-irradiation anemia, whereas it returns to normal level at the time when the benzol anemia is recovering. 3) The proportion of sideroblasts either decreases or becomes nil in acute and chronic hemorrhagic anemias where there exist an increase in the erythropoietic function and iron deficiency. 4) In the case which is in the process of hemolysis such as in the phenylhydrazine anemia, the proportion varies according to the period; and it shows no marked change at the extreme periods while it increases at the time of recovery. Furthermore, no significant change can be observed in the saponin anemia. 5) Parallel relationship between sideroblasts and serum iron is not always clearly noticeable, but the two seem to be always in the state labile to utilization. Again, this stainable iron in erythroblasts is understood to be directed solely for utilization and is by far the most labile to iron utilization. 6) From these observations, it may be said that the changes of sideroblasts or of this stainable iron, are dependent upon the conditions of equilibrium existing between the iron supply by serum iron and the utilization of iron controlled by hematopoietic functions. en-copyright= kn-copyright= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name=木村郁郎 kn-aut-sei=木村 kn-aut-mei=郁郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科 END start-ver=1.4 cd-journal=joma no-vol=69 cd-vols= no-issue=7 article-no= start-page=1773 end-page=1798 dt-received= dt-revised= dt-accepted= dt-pub-year=1957 dt-pub=19570731 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Sideroblasts Part 1 Sideroblasts in Blood Disorders kn-title=Sideroblastに関する研究 第一編 血液疾患とSideroblast en-subtitle= kn-subtitle= en-abstract= kn-abstract=By examining sideroblasts in normal subjects and in patients with various hematologic disorders and determining the rates of appearance, a sideroblastogram consisted of classifications of types I, II and III, according to numbers of iron granules was made. Again, sideroblast ratios (S. r.) were computed and studies were carried out by comparing the proportion of sideroblasts with serum iron. The results are as follows: 1) The proportion of sideroblasts has been found extensively in the normal persons, but in the sideroblastogram it is all intermediary in type, whose sideroblast ratio never exceeds 1 nor yields zero. 2) The proportion of sideroblasts in the cases of erythropoietic disturbances in the bone marrow such as hypoplastic anemia, leukemia, disorders due to irradiation has been found generally high, and in almost all these cases the proportion of sideroblasts reveals a shift to the right in the sideroblastogram at the same time S. r. has been above 1. 3) In various iron deficiency anemias in a broader sense, the proportion of sideroblasts is decreased and a shift to the left is demonstrated in the sideroblastogram; and S. r. is zero or is approaching to zero. 4) On the other hand, in Graves' disease and kala-azar the proportion of sideroblasts is normal, but in hemolytic anemia, liver cirrhosis and chronic nephritis it is high. Again, in agranulocytosis and myxedema the proportion of sideroblasts is low. 5) Sideroblasts seem to have some relationship with serum iron, but the two do not necessarily change parallel with each other. 6) These procedures of the determining of sideroblasts are equally useful or even superior to similar methods on serum iron in the differentiation of various anemic patients. 7) From these results, it is believed that stainable iron in these sideroblasts exists between serum iron and hematopoiesis in the process of utilization, and that it naturally has a close association with both serum iron and hematopoiesis. Note: Sideroblasts are the erythroblasts containing stainable, nonhemoglobin iron granules. en-copyright= kn-copyright= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name=木村郁郎 kn-aut-sei=木村 kn-aut-mei=郁郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科 END start-ver=1.4 cd-journal=joma no-vol=69 cd-vols= no-issue=3 article-no= start-page=627 end-page=647 dt-received= dt-revised= dt-accepted= dt-pub-year=1957 dt-pub=19570331 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=A Study on Heinz's Body Part One: Hydrogen-Bomb Cases and Experimental Domestic Rabbits Exposd to Radio-activity, both Observed on the Basis of the Appearance of Heinz's Body kn-title=ハインツ氏小体に関する研究 第一編 ハインツ氏小体出現を中心として観たビキニ水爆症及び実験的放射能障碍家兎に就て en-subtitle= kn-subtitle= en-abstract= kn-abstract=By determining at first the appearance of Heinz's body in man and male domestic rabbits, both normal, with the Yoshida-Kawamura method, and next by investigating the rate of the appearance of Heinz's body in Bikini hydrogen-bomb patients and in the domestic rabbits injected with radio-isotope P(32) as well as in the rabbits exposed to X-ray, the author obtained the following results: 1. Two separate groups of male and female, each consisting of 25 persons, were selected and the rate of the Heinz-body appearance was determined; and as the result, the average rates of the appearance of each were found to be 63.88‰ (male) and 66.52‰ (female) respectively; thus the average value of females was slightly higher. On the other hand, in the 62 normal male rabbits similarly measured, the average value of the appearance of Heinz's body was found to be 22.19‰. 2. In the case of the 7 fishermen passing through the Bikini area and having shown no apparent clinical disorders, the rate of Heinz-body appearance was found to be still high, yet within 3 to 4 weeks after the examination, it returned to normal, paralleling more or less with the change of blood-iron contents, Sideroblastogram, and the results of Bone marrow tissue culture. In view of this, in establishing a criterion of the recovery of these hydrogenbomb cases, it seems that scrupulous daily examinations such as mentioned previously are of urgent necessity. 3. In the domestic rabbits receiving the injection of 100 μc. P(32)/kg, Heinz's body increased 6 hours after the injection but it returned to normal after 20 to 42 days; even then they maintained a high value of blood-iron contents and showed an unmistakable evidence of radio-active substance in the bone as well. Whereas those rabbits receiving the dose of 850 μc. P(32)/kg showed the increase of Heinz's body either 30 minutes or 3 hours after the injection, and after 48 hours and 28 days respectively their values reached close to 1, 000‰ and continuously showing an intermediately progressive trend, they all died. The blood counts of capillary leucocytes in the case of the rabbit No.58 returned to normal 28 days after the injection, but the percentage of capillary leucocytes, the blood counts of erythrocytes, and the bone picture were still abnormal and radio-active substance could be recognized in the bone. Heinz's body, however, did not appear in the control injected with primary potassium phosphate. 4. Among the 6 rabbits suffering from acute X-ray radiation, and the five from chronic, three of the latter and all the acute cases revealed a progressive proclivity to the formation of Heinz's body before their death. en-copyright= kn-copyright= en-aut-name=SaitoTetsuro en-aut-sei=Saito en-aut-mei=Tetsuro kn-aut-name=斎藤哲郎 kn-aut-sei=斎藤 kn-aut-mei=哲郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=2 article-no= start-page=209 end-page=232 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950905 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Document Information Chronological Record Prepared by Mr. Seo, Formerly a Director of the Manchuria Iron and Steel Company, Anshan kn-title=瀬尾メモランダムについて en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=MatsumotoToshiro en-aut-sei=Matsumoto en-aut-mei=Toshiro kn-aut-name=松本俊郎 kn-aut-sei=松本 kn-aut-mei=俊郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=1 article-no= start-page=147 end-page=174 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19960605 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=The Diaries ofthe Deserted Japanese Settlers in Anshan kn-title=1940年代後半の鞍山日本人社会に関する歴史年表―『鞍山回想録石川義助先生を憶う』，『鉄都鞍山の回顧』を中心に― en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper I introduce two diaries written by the Japanese settlers who were forsaken in Anshan, Liaoning province, by the Guandong Anny in 1945. I also present a chronological table about Anshan during the civil war between the Nationalist and the Communist, cross checking these diaries with the other historical materials. The abandoned settlers spent hard and horrible days in the period. Some of them were forced to help the reconstruction of Anshan Iron and Steel Company. So their diaries give us the valuable information to comprehend the situation of Anshan and A.I.S.C. One of the diaries was written by an ex-clerk of Showa Iron and Steel Works(later A.I.S.C.). It tells us the daily incidents around his life. Another diary teaches us the political and economic circumstances in Anshan. The author of the latter had been one of the leaders of the Japanese Settlement Corporation at Anshan and was arrested once by the Eight Root Anny. He described his unusual experience vividly in the diary. en-copyright= kn-copyright= en-aut-name=MatsumotoToshiro en-aut-sei=Matsumoto en-aut-mei=Toshiro kn-aut-name=松本俊郎 kn-aut-sei=松本 kn-aut-mei=俊郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=4 article-no= start-page=167 end-page=183 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990310 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=On the New Academic Achievements concerning the Historical Studies on the Iron and Steel Industry in Northeast China Attained by T. Matsumoto kn-title=満洲鉄鋼業研究の新地平 en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper is aimed at summing up T. Matsumoto's recent academic achievements regarding Anshan Iron & Steel Co. in northeast China. The important facts raised therein are as follows. AISC rapidly recovered its facilities in the first half of 1950s. The production level of AISC resumed its maximum prewar level between 1952 to 1954. How was it possible to restore the equipment which had been heavily damaged from the WWII and the Chinese Civil War in such a short period? A marvelous reconstruction of AISC in 'Three Year Reconstruction Period' after 1949 was a result realized by the combination of many factors: (1) exceptional enthusiasm for reconstruction among young Chinese engineers and workers who were sent to Anshan and trained there; (2) the flexible man power policy of Eight Route Army controlling their hostile emotion to the ex-enemies, pursuing the latest and rational know-how, and challenging to create a new steel production technology; (3) availability and cooperation of the Japanese and the ex-Nationalist Chinese engineers; (4) remaining equipments and captured documents; (5) experience and skills ofremaining Chinese workers. With all these five factors combined, AISC dramatically recovered its facility, and restored its prewar level in a few years. en-copyright= kn-copyright= en-aut-name=MatsumotoToshiro en-aut-sei=Matsumoto en-aut-mei=Toshiro kn-aut-name=松本俊郎 kn-aut-sei=松本 kn-aut-mei=俊郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=3 article-no= start-page=163 end-page=182 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990310 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=A Survey ofthe Historical Studies in Japan and the World regarding the Iron and Steel Industry in Northeast China during 1940 s-1950 s kn-title=満洲鉄鋼業研究の現状 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The iron and steel industry in northeast China has been playing an important role both in the Manchukuo period and the Socialist China. The academic achievements of the historical analysis concerning the industry during 1940s and 1950s, however, has not been so rich, because of the following two reasons; (1) lack of historical materials; (2) ideological obstacles against recognizing the rapid economic development under the Manchukuo regime and its aftermath toward the new born China. Many historical resources were lost in the chaos during and just after the WWII. None the less, not negligible amount ofmaterials exist not only in Anshan but in Nanjing, Taipei, Tokyo, Washington, London etc., crossing widely the boundaries of the counties. The iron and steel industry is a key military industry. For this reason, the Communist and the Nationalist had strictly prohibited researchers to use their collections until 1980s. On the other hand, the image on the socialism had for long been simply stereotyped as justice or liberation among the historians in Japan after 1945. Such a situation reflexes the important truth of the history. It has, however, made the research angle of the historians inadequate to recognize the positive aspects of the industry developed by colonial authorities. en-copyright= kn-copyright= en-aut-name=MatsumotoToshiro en-aut-sei=Matsumoto en-aut-mei=Toshiro kn-aut-name=松本俊郎 kn-aut-sei=松本 kn-aut-mei=俊郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=1 article-no= start-page=43 end-page=61 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980610 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Steel-smelting System of the Showa Iron & Steel Works in the Late 1940 s kn-title=1940年代後半における昭和製鋼所の製鋼工場 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The Showa Iron & Steel Works (the Anshan Iron & Steel Co. after the war) lost over 60% of its steel-smelting facility when the Red Army (The Soviet Army) confiscated the equipment of the company. One of its two steel-smelting factories was completely destroyed. The production capacity fell down from 1,330,000 tons / year to 500,000 tons / year. The AISC, however, recovered its maximum pre-war level in 1952-53. The output of steel ingot was 843,000 in 1943, 770,000 in 1952, and 976,000 in 1953. This paper aims to examine the reason why the operation of the company recovered so quickly in spite of its serious war damage. The factors which enabled the company to rebuild its production were as follows: (1) the remaining equipment of the first steel-smelting factory; (2) highly educated and well trained Japanese engineers; (3) documents of SISW concerning the operation of its equipment; (4) flexible leadership of the AISC; (5) strong motivation of Chinese engineers and Chinese workers. Technical knowledge and experience were quite important for the AISC, especially when it started its operation. Some parts ofthe first steel-smelting factory was much improved by the Chinese engineers, using the then existing documents of SISW. A conversion of preliminary smelting furnaces to open hearth furnaces was the most successful example. Chinese engineers bravely tried an un-experienced method in the face of Japanese engineers' warning, considering the new circumstances for steel production. Unbelievable hard work of Chinese engineers and workers sustained those process. All of these factors were necessary to accomplish the rapid reconstruction of the company. en-copyright= kn-copyright= en-aut-name=MatsumotoToshiro en-aut-sei=Matsumoto en-aut-mei=Toshiro kn-aut-name=松本俊郎 kn-aut-sei=松本 kn-aut-mei=俊郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=4 article-no= start-page=303 end-page=323 dt-received= dt-revised= dt-accepted= dt-pub-year=2000 dt-pub=20000310 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=On the Raid of US Air Force against the Manshu Iron & Steel Company in 1944 kn-title=満洲製鉄鞍山本社の空襲被害, 1944年 en-subtitle= kn-subtitle= en-abstract= kn-abstract=US Air Force bombed the Manshu Iron & Steel Company (MISC) in Anshan five times in 1944. All these air raids were organized by the 20 th Air Force of the US based in Chengdu, Sichuang province, and two attacks among five left the MISC serious damages. The B 29, the Superfortress, which was newly developed in the US and distributed to the China theater in April of 1944, was mobilized in the operations. The damage of the MISC between July to November 1944 was quite heavy, and losses to assumed output became huge as follows; coke 46.5%, pig iron 50.2%, steel ingot 58.3, rolled steel 62.4%. Those damages were, however, quickly recovered to considerably high level by March of 1945, i.e. coke 93.8%, pig iron 99.1%, steel ingot 73.2%, rolled steel 98.3%. Even after the confiscation by the Russian Red Army, the coke sector resumed its production ability to over 88% by 1953. The purpose of this paper is to clarify the degree of the air raid damages, and to describe the reconstruction process of the coke sector, which was most seriously destroyed by those bombings. The report of the United States Strategic Bombing Survey and some unknown memoirs written by the ex-staff of the MISC are used as main sources. en-copyright= kn-copyright= en-aut-name=MatsumotoToshiro en-aut-sei=Matsumoto en-aut-mei=Toshiro kn-aut-name=松本俊郎 kn-aut-sei=松本 kn-aut-mei=俊郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=32 cd-vols= no-issue=4 article-no= start-page=31 end-page=64 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010310 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Estate Management and Administration of the Family Estate in the Victorian Prosperous Period; the Case of the 7th Duke of Devonshire kn-title=ヴィクトリア繁栄期の所領経営と家産管理--第7代デヴォンシア公爵の場合 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The Duke of Devonshire was a traditional landed aristocrat, who owned, according to the 'New Doomsday Book' of 1873, the seventh largest land, out of which he gained the second largest gross rental in the English landed aristocracy. He formed its central core. William Cavendish (1808-1884), who inherited the Dukedom in 1858, has been taken as a classic Mid-Victorian improving landlord. His entrepreneurship mainly covered the industrialisation and urbanisation of Barrow-in-Furness. In 1846 he constructed the Furness Railway as a means of developing his own iron mines, in the 1860's created the Barrow Haematite Steel Co. Ltd. and in the early 1870's a group of firms, which were related to the export of the steel rail. The firms respectively worked as elements which composed the productive forces for the use of landnature, and as a whole they created a regional structure of productive forces for the use of natural resources. The Cavendishes completely grasped these firms, at first as 'a proprietary railway', next as a 'Furness Railway-Cavendish organism', and lastly as the 'Furness Railway's Industrial Empire'. It was made possible owing to the prosperity of England as World Factory that the landowner transformed his own wealth into the capital on a large scale, led by the interest of his estate management. This was the process of forming a 'Capital-Landownership Complex' proper to Modern England, in which on one hand the landowner partly came to base on the capital, and on the other hand English Capitalism mobilized the wealth ofthe landowner to the capital. The aim of this paper is to study the Duke of Devonshire's finance which supported the aggressive estate management. It brings light on the followings; 1. the 6th Duke's Finance in the 1850's, through the close study of the Chief Agent's General Statements of Income and Expenditure, 2. the state of the Duke Family's finance on the 7th Duke's succession to the Dukedom, through the careful examination of his the letters and diary, 3. his estate management and its finance between 1858 and 1884, through the analysis ofthe summary statement. en-copyright= kn-copyright= en-aut-name=AchiraTakao en-aut-sei=Achira en-aut-mei=Takao kn-aut-name=阿知羅隆雄 kn-aut-sei=阿知羅 kn-aut-mei=隆雄 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=滋賀大学経済学部 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=12-2 article-no= start-page=8643 end-page=8648 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Histochemical Studies on the Liver Tissue Iron Part 2 Histochemical Studies on the Liver Tissue Iron after the Administration of Liver Poison kn-title=肝組織鉄の組織化学的研究 第2編 肝臓毒負荷後の肝組織鉄の組織化学的研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Acute and chronic liver damage were caused by the liver poison of formic acid allyl and carbon tetrachloride on the grown up dog, and the distribution of liver tissue iron was observed, in comparison with the histological picture of the liver, blood easy split iron, serum iron and serum bilirubin value. And the result were as follows. 1. In the cases with acute toxication of formic acid allyl, the iron deposition was remarkable in the circumference of liver acinus i.e. marginal zone and Glisson's sack, and it was considerably found in the central zone and intermediate zone. 2. In the cases with chronic toxication of formic acid allyl, the iron deposition was localized in the circumference of liver acinus i.e. marginal zone and Glisson's sack. 3. In the cases with acute toxication of carbon tetrachloride, the iron deposition was remarkable in the central part of liver acinus. 4. In the cases with chronic toxication of carbon tetrachloride, the iron deposition was not only found in the central part of liver acinus, but it was also considerably found in the marginal zone and Glisson's sack of the circumference of liver acinus. 5. These iron deposition were the most remarkable in the stellate cells of local area and then in the liver cells, and the stellate cells had the picture thought the fullness of iron with the sewelling. This change was due to the hemolysis and local change produced by the administration of the above liver poisons, and it was different from the findings described in the first chapter. 6. The above tissue iron was triatomic region were not changed by the removed surface. Therefore, it was thought that the above tissue iron was the hemosiderin iron originated from the destruction of erythrocyte flowing out of the blood vessel. en-copyright= kn-copyright= en-aut-name=KusudoHiroshi en-aut-sei=Kusudo en-aut-mei=Hiroshi kn-aut-name=楠戸宏 kn-aut-sei=楠戸 kn-aut-mei=宏 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=12-2 article-no= start-page=8627 end-page=8642 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Histochemical Studies on the Liver Tissue Iron Part 1 Histochemical Studies on the Liver Tissue Iron in Liver Diseases kn-title=肝組織鉄の組織化学的研究 第1編 肝疾患時，肝組織鉄の組織化学的研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The distribution of liver tissue iron was histochemically observed on the cutting section of liver tissue diseases, especially acute hepatitis, chronic hepatitis, subacute liveratrophy, livercirrhosis and posthepatic syndrome, and the correlation of it with the pathohistological findings of the same cutting section and liver function, serum bilirubin value and serum iron etc. in the same patient was studied at the same time. And the results were as follows. 1. The Prussian blue method, Turnbull blue method and removed surface method, as the detective method of liver tissue iron, and the possibility of the error by the detective method were observed. And the reliable condition was decided. 2. The iron detected in the liver tissue of liver diseases was triatomic iron, but diatomic iron was not observed. And the detection of iron before and after the removed surface was obtained in the same dosis at the same place. 3. In acute hepatitis, the increase of iron was mostly seen in the liver cells of lobular central zone and intermediate zone and it was next in the sinus and stellate cell, and the distribution of iron in the Glisson's sack was very few. But the increase of it in the Glisson's sack was observed on the cases with the inflammation of Glisson's sack. 4. In subacute liveratrophy, the deposited dosis of iron was remarkable and it's distribution was remarkable in the liver parenchymal cells of intermediate zone and marginal zone. 5. In chronic hepatitis, the iron dosis of liver tissue was generally increased and the distribution of the iron deposit was decreased, on the contrary, in the central zone and the increase of it was seen in the intermediate zone, marginal zone and Glisson's sack. In the cases with the inflammatory findings of Glisson's sack, the increase of iron deposition was observed. 6. In livercirrhosis, there were the cases with the increase of iron and the cases without the increase of iron and it's distribution was remarkable in the circumference liver lobulus, especially the Glisson's sack. 7. In posthepatitic syndrome, there were the cases with considerable increase of iron and the cases without increase of iron and it's deposition was remarkble in the intermediate zone, especially the marginal zone, but no increasing tendency of iron deposition was found in the Glisson's sack. 8. The above iron deposition of liver tissue was mostly found in the degenerative cells in which the nucleus was not markedly attacked from the degeneration. 9. The liver tissue iron of these diseases was due to the hemosiderin produced from the erythrocyte flowing out to blood vessel with the pathologic changes of the liver and the liver cells without the pathologic change of the nucleus, in the region with the remarkable pathologic change participated in it. en-copyright= kn-copyright= en-aut-name=KusudoHiroshi en-aut-sei=Kusudo en-aut-mei=Hiroshi kn-aut-name=楠戸宏 kn-aut-sei=楠戸 kn-aut-mei=宏 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=12-2 article-no= start-page=8573 end-page=8579 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Ferritin in Organs Part II Studies of Ferritin in the Liver, Kidney and Spleen on the Decomposition Process of Hemoglobin in vivo kn-title=臓器ferritinに関する研究 第2編 生体内血色素分解過程における肝，腎，脾のferritinについて en-subtitle= kn-subtitle= en-abstract= kn-abstract=With the purpose to clarify the significance of apoferritin in various organ on the iron metabolism, ferritin in the liver, kidney and spleen of rabbits with liver damage by carbon tetrachloride or chloroform, thrombosis of reticuloendothelial system and binding of common duct were measured, besides, the vicissitude of those was timely observed after the administration of phenylydrazin to the above cases and the vicissitude of hemoglobin dosis, easy split iron dosis in blood and serum bilirubin was also observed at the same time. And the results were as follows. 1. The mobilization of apoferritin was first observed on the administration of phenylhy drazin into healthy case and it was remarkably decreased, but the increase of easy split iron in blood and serum rion accompanied by hemolysis, then the increase of bilirubin were occured and apoferritin became showing the increase since that time. In other words, ferritin in the liver, kidney and spleen was quickly mobilized as the deposit iron, and a part of the iron isolated from easy split iron with the decomposition of hemoglobin was securely deposited as ferritin. 2. In the cases with liver damage by carbon tetrachloride, the mobilization of apoferritin in various organs was not occured at the early period because it might be caused by the function damage of bone marrow, on the contrary, those increase being related to the increase of easy split iron and serum iron accompanied by hemolysis was observed and the mobilization of apoferritin in various organs was observed afterward. Furthermore, it was thought that ferritin in kidney had not only the meaning of deposit iron, but also it had the meaning of block to iron excretion at that time, since the vicissitude of apoferritin in kidney. 3. The decrease of apoferritin in organ was observed on the liver damage by chloroform, but the vicissitude of apoferritin in liver after the administration of phenylhydrazin was not always agreed with vicissitude of hemoglobin dosis, easy split iron blood and serum iron and it was supposed that the mechanism of iron mobilization from ferritin and the mechaniam of ferritin formation in the liver were attacked with the damage of liver itself. 4. In the cases with thrombosis of reticulcendothelial system, apoferritin in organ increased with serum iron, but the mobilization of iron was not remarkable after the administration of phenylhdrazin. And the increase of apoferritin was not observed, even though easy split iron in blood and serum iron was increased after the decomposition of hemoglobin. 5. In the cases with binding of common duct, all of hemoglobin, serum iron and organ iron decreased and apoferritin in ordan increased with the increase of easy split iron and serum iron after 6 hours of the administration of phenylhydrazin. 6. Since the above results, ferritin in the liver, spleen and kidney had the significance as the deposit iron and the spleen was the most sensitive for the mobilization of iron in various conditions. And the significance of block to the excretion of iron in a part should be considered in the kidney. en-copyright= kn-copyright= en-aut-name=KajiMasayoshi en-aut-sei=Kaji en-aut-mei=Masayoshi kn-aut-name=加地正義 kn-aut-sei=加地 kn-aut-mei=正義 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=12-2 article-no= start-page=8567 end-page=8571 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Ferritin in Organs Part 1 Studies on the Determinative Method of Ferritin in Organ and the Ferritin Dosis in Organs of Healthy Rabbits kn-title=臓器ferritinに関する研究 第1編 臓器ferritinの測定並に健康家兎臓器ferritin量について en-subtitle= kn-subtitle= en-abstract= kn-abstract=With the preparation to study on the fate of iron isolated from the decompostion process of hemoglobin in vivo since the distribution of ferritin in organs, the apoferritin quantitative method by L. Heilmeyer and others, as a quantitative methode of ferritin in organ, was investigated and the apoferritin dosis in the liver, kidney and spleen of healthy rabbits were measured. And the results were as follows. 1. The material was suitable to use that concentrated for 30-40 minutes by the water jet pump until it was almost dried, in boiling water at 40-60°C., at the end step. 2. As for the condition of paper electrophresis, it was the most suitable to make the migration by the fixed electric pressure of 25 volt to the 1 cm width of filter-paper of Schleicher & Schüll No.2043a for 24 hours. 3. The measurement became easy and accurate by the farther coloring of the stained area with ammonia gas before the fixation of filter-paper by solid paraffin. 4. The degeneration of material made an error on the paper electrophoresis of apoferritin, but the error was not observed on the material by this improved method. 5. The appearance rate of apoferritin in 1g of liver, kidney and spleen of healthy rabbit was 7.6, 7.8, 6.4. en-copyright= kn-copyright= en-aut-name=KajiMasayoshi en-aut-sei=Kaji en-aut-mei=Masayoshi kn-aut-name=加地正義 kn-aut-sei=加地 kn-aut-mei=正義 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=12-2 article-no= start-page=8401 end-page=8410 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Experimental Studies on Aspirin Allergy Part 1. Properties of Aspirin-protein kn-title=アスピリンアレルギーに関する実験的研究 第1編 アスピリン蛋白の性状に就いて en-subtitle= kn-subtitle= en-abstract= kn-abstract=Research on the biological activity of proteins has developed on the basis of studies carried on the chemical derivatives of proteins produced after a selective reaction between some chemical reagents and specific amino acid residual group in proteins. Following the techniques of G. C. Butler, C. R. Harington and M. E. Yuill (1940) the author produced aspirin-protein by chemically combining amino group of serum protein (ε-Amino group of lysine residual group) with aspirin, and carried out serological studies with this aspirin-protein, especially on the homogeneity between aspirin-protein and serum protein, and on the change in the property of proteins by the introduction of aspirin, and obtained the following results. 1. The free amino acid group consumed in the chemical combination of aspirin with protein can be confirmed by the ninhydrin reaction with reagent hydrindantin. 2. The viscosity of aspirin-protein is higher than that of normal serum protein. 3. And aspirin-protein has moved its isoelectric point towards the acidic side. 4. The aspirin group of aspirin-protein is possible to isolate and extract with toluene, after hydrolyzis aspirin-protein, and to be determined colorimeterically by Gerhardt's iron perchloride reaction. en-copyright= kn-copyright= en-aut-name=KimuraSusumu en-aut-sei=Kimura en-aut-mei=Susumu kn-aut-name=木村晋 kn-aut-sei=木村 kn-aut-mei=晋 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部公衆衛生学教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=12-2 article-no= start-page=8353 end-page=8362 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Erythrocyte Disintegration Processes in vivo by Radioactive Iron Part 2. On the Changes of Easily Split Off Iorn, Resistance to Osmotic Pressure, and Mechanical Fragility in Erythrocytes Accompanying the in vivo Aging Processes of Erythrocytes kn-title=放射性鉄による生体内赤血球崩壊過程に関する研究 第2編 生体内赤血球老化過程にともなう赤血球内易分離鉄と滲透圧抵抗並びに機械的脆弱性の変化に就て en-subtitle= kn-subtitle= en-abstract= kn-abstract=With the purpose to elucidate the in vivo aging processes of erythrocytes as a follow-up study of the previous report, the author studied the changes of easily split off iron, resistance to osmotic pressure and mechanical fragility in the labeled erythrocytes, young, mature, and aged, obtained after intravenous injection of Fe(59)-globulin into blood-depleted anemic rabbits and further given a large dose of non-radioactive iron compound; and obtained the following results. 1. In the observations conducted on changes in the easily split off iron of labeled erythrocytes from young ones to aged ones after intravenous injection of Fe(59)-globulin into blood-depleted anemic rabbits, the easily split off iron content is greatest in the regenerating stage and least in the mature stage; whereas in the aging stage it again tends to increasa slightly. Furthermore, these fluctuations are considered to ba stochastically significant changas. 2. In comparing the percentage of residual erythrocytes with the change in the easily split off iron content in peripheral blood after the transfusion of labeled erythrocytes, young, mature, and aged, into normal rabbits, generally there can be recognized an inverse relationship between the two, and it has been reconfirmed that the content of easily split off iron in erythrocytes, including some young erythrocytes destined to an early destruction increases along with the aging. 3. In estimation of osmoticpressure resistance of erythrocytes in various age by the hemolytic ratio in hypotonic saline solution, it has been found that the resistance to osmotic pressure is weakest in young erythrocytes, and it increases rapidly with maturation, reaching equal to or slightly over the resistance of whole erythrocytes. Moreover, no significant changes in the osmoticpressure resistance can be observed along with aging processes, and the resistance of aged erythrocytes is about the same as that of whole erythrocytes. 4. In estimating mechanical fragility of erythrocytes in similar age range, by the ratio of hemolysis due to shaking, the fragility is greatest in aged erythrocytes, followed by young ones and least in mature ones. en-copyright= kn-copyright= en-aut-name=TamuraTatsushi en-aut-sei=Tamura en-aut-mei=Tatsushi kn-aut-name=田村辰士 kn-aut-sei=田村 kn-aut-mei=辰士 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=12-2 article-no= start-page=8343 end-page=8352 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Erythrocyte Disintegration Processes in vivo by Radioactive Iron Part 1. On the Visceral Distribution and the Change of Iron in the erythrocyte Destruction Processes in vivo kn-title=放射性鉄による生体内赤血球崩壊過程に関する研究 第1編 生体内赤血球崩壊過程に於ける鉄の臓器分布竝びにその消長に就て en-subtitle= kn-subtitle= en-abstract= kn-abstract=In pursuit of the life span curve of rabbit erythrocytes with the use of radioactive iron as the tracer, and by transfusion of 1 ml/kg labeled erythrocytes, divided into young, mature and old, into normal rabbits, the author studied changes of radioactivity in peripheral blood, and the distribution and changes of radioiron in the liver, spleen, kidneys and bone marrow after the destruction of erythrocytes in each group of animals; and obtained the following results. 1. By administering intravenous injection of Fe(59)-globulin into blood-depleted anemic rabbits and then giving daily intravenous injection of 3 mg/kg non-radioactive gluferricon per day for the period between the tenth day and seventieth day after the previous injection when the radioactivity of the labeled erythrocytes in circulating peripheral blood has reached the maximum, it has been found that the maximum rate of Fe(59)-utilization on the sixtieth day has declined to 28.5 per cent as compared with the maximum of 84.6 per cent in Fe(59)-utili zation at the early stage of the tenth day. This proves that there is a marked inhibition on the re-utilization of iron after destruction of erythrocytes. 2. The average life span of rabbit erythrocytes calculated from the life span curve under these experimental conditions is roughly 30 days. 3. When transfusion of 1 ml/kg labeled erythrocytes divided into young, mature and old, is given to different groups of normal rabbits, the older erythrocytes disappear quickly from the circulating blood, while the rate of decrease in mature erythrocytes is relatively slower, taking generally three weeks to decrease. However, in the case of young erythrocytes the changes is most peculiar in that it rapidly decreases about 20 per cent within 24 hours after the transfusion and thereafter the decrease is slowest. In other words, those erythrocytes that have been physiologically disintegrated and disposed of are mostly older erythrocytes, but some of young ones with extremely short span of life seem to be included. 4. In the pursuit of visceral distribution of radioactive iron after the similar blood tranfusion firstly no significant difference in the distribution rate among various organs can be recognized by the age of transfused blood. As for the distributed quantity per unit of organ weight it is decidedly great in the spleen as compared with other organs. The percentage of the iron distribution by different organs is generally higher in the liver and bone marrow, followed by the spleen; and in the kidneys it is found to be in only a trace. Therefore, as for the site of physiological disposal of erythrocytes at least the spleen seems to have no special bearing but rather the liver and bone marrow seem to be closely involved in such physiological processes. Moreover, in contrast to the case where hemoglobin is loaded, no significance can at all be attributable to the kidneys as the site of erythrocyte disposal, and in the meanwhile a secondary change in iron content can be recognized in bone marrow as the hematopoietic organ. en-copyright= kn-copyright= en-aut-name=TamuraTatsushi en-aut-sei=Tamura en-aut-mei=Tatsushi kn-aut-name=田村辰士 kn-aut-sei=田村 kn-aut-mei=辰士 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=12-2 article-no= start-page=8243 end-page=8252 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Metabolism of Ferric Iron instillated into Vein Part 2. The Effects of the Venous Instillation of Various Iron Compounds on the Recovery from Anemia in Phenylhydrazin Anemic Rabbits and its Influences on Hemosiderosis kn-title=靜脈内に導入された鉄の代謝に関する研究 第2編 Phenylhydrazin貧血家兎に於ける各種鉄剤静脈内注入後貧血恢復効果，並びにhemosiderosisに対する影響について en-subtitle= kn-subtitle= en-abstract= kn-abstract=In the phenylhydrazin anemia induced by the author's method a protracted and persistent anemia, an increase in the number of reticulocytes, a marked loss of the body weight, and striking hemosiderosis in the liver and other organs, could be observed. The author observed the manner of the recovery from anemia and the changes in hemosiderosis in these anemic animal after injection of such substances as ferritrat, ferrobalt, gluferricon, gelatin iron (kindly supplied by Dainihon Seiyaku K. K.) serum iron colloid (S. I. C.) prepared by mixing homologus serum with FeCl(8). Besides these, similar experiments were carried on the phenylhydrazin anemic rabbits Whose reticulo-endthelial system had been blocked with carbon black. As the results, in the case of daily injection of 0.5mg. of such an iron compound per day, S. I. C. proves to be the most effective on the recovery of anemia, followed by ferritrat, ferrobalt, gelatin iron, and gluferricon in the descending order. As for the decrease in reticulocyte number, it occurs in about the same order as above. As for the recovery of hemosiderosis S. I. C. acts most effectively followed by ferritrat, but others hardly have any effect. When 10mg. a day is given twice during the period of 10 days. The recoveries of anemia are delayed comparing to those given 0.5mg. daily. Saying from the last series of experiment only anemia recovers more rapidly with gelatin iron or ferritrat than others, but no recovery of hemosiderosis can be recognized in the liver. However, in this instance the amount of liver ferritin is highest when S. I. C. is given followed by ferritrat, ferrobalt, gluferricon and gelatin iron in the descending order. In the rabbits whose R. E. S. is blocked by carbon black, the iron injection can not help to recover any of these disturbances. From these results, for iron there seems to be a fairly great difference in entering into the iron metabolic cycle according to the chemical structure of iron compounds, and in the case of the most effective ones like S. I. C. reticulocytes decrease in number along with the recovery of anemia; the amount of ferritin in the tissues increase; and hemosiderosis recovers markedly. However, as these changes do not occur when the reticulo-endothelial system is blocked, it is believed that the reticulo-endothelial cells play an important role in there changes. Furthermore, a smaller amount of iron injected daily is utilized much better than a large dose of iron given at one time. en-copyright= kn-copyright= en-aut-name=OgoHiroyuki en-aut-sei=Ogo en-aut-mei=Hiroyuki kn-aut-name=小河博之 kn-aut-sei=小河 kn-aut-mei=博之 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部病理学教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=12-1 article-no= start-page=7957 end-page=7976 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591120 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Iron and Copper Metabolisms in the So-Called Banti's Disease Part 2. Influences of the Anemia-Inducing Agent on the Iron and Copper Metabolisms in the So-Called Banti's Disease kn-title=所謂Banti氏病の鉄及び銅代謝にする研究 第2編 所謂Banti氏病の催貧血性因子の鉄及び銅代謝に及ぼす影響に就いて en-subtitle= kn-subtitle= en-abstract= kn-abstract=The author studied what influences might be exerted on the iron and copper metabolisms in rabbits by anemia-inducing, substance found in the patient with the so-called Banti's disease, and obtained the following results. 1. In the rabbits injected with the serum or the spleen extract of Banti's disease patients, there can be recognized a decrease in the number of erythrocytes and in the serum iron content and an increase in the serum copper content. 2. After injecting the serum and the spleen extract of the patient to rabbits, the iron and copper contents in the liver and spleen of the animals were measured. From these results as well as from their bone marrow picture, and the serum iron and copper contents it has became clear that the mobilization of the stored iron is disturbed and that the copper metabolism is involved in it. 3. Even in the non-toxic splenomegaly (Tomoda) it has been recognized that there exists an agent that induces changes in the iron and copper metabolisms. en-copyright= kn-copyright= en-aut-name=OkadaYoshio en-aut-sei=Okada en-aut-mei=Yoshio kn-aut-name=岡田由夫 kn-aut-sei=岡田 kn-aut-mei=由夫 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=12-1 article-no= start-page=7941 end-page=7955 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591120 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Iron and Copper Metabolisms in the So-Called Banti's Disease Part 1. On the Serum Iron and Copper Contents, Visceral Iron and Copper Contents, and the Iron and Copper Excreted in the Urine of Patients kn-title=所謂Banti氏病の鉄及び銅代謝にする研究 第1編 患者の血清鉄及び銅量臓器鉄及び銅量並びに尿中排泄鉄及び銅量に就いて en-subtitle= kn-subtitle= en-abstract= kn-abstract=With 29 patients of the so-called Banti's disease the author carried out clinical investigations mainly on the iron and copper metabolisms, and obtained the following results. 1. In the patients suffering from this disease a decrease in the serum iron content and an increase in the serum copper content can be recognized. 2. In this diseasa the deerease in visceral iron fractions, PI and PII in the liver, is marked, while in the spleen although PII is decreased, PI, on the contrary, is increased. 3. In this disease the gram unit content of visceral copper in the liver is increassed when compared with that in the spleen. 4. The iron content excreted in the urine of this disease is less than that in normal persons, whereas the copper content is greater than that in normal persons. 5. At the time of ACTH-gel test the decrease in the serum iron content and the increase in the serum copper are more marked in the patient than those in normal persons, while on the day and second day of the test the iron and copper contents excreted in the urine of the patient do not decrease so markedly as those in normal person. 6. The serum iron content five minutes after the iron tolerance test shows a lower value in the patient than that in normal person, and likewise the serum copper content shows somewhat a similar decrease. 7. On the basis of these findings the author discussed from various angles the iron and copper metabolism in the patient with this disease. en-copyright= kn-copyright= en-aut-name=OkadaYoshio en-aut-sei=Okada en-aut-mei=Yoshio kn-aut-name=岡田由夫 kn-aut-sei=岡田 kn-aut-mei=由夫 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=11-2 article-no= start-page=7745 end-page=7752 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591030 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Histomicroscoptic Photometric Studies on the Formation Process of Bilirubin in the Subcutaneous Tissue Part I Studies on the Formation Process of Bilirubin in the Experimental Subcutaneous Hematoma kn-title=皮下組織内胆汁色素生成過程に関する組織顕微分光学的観察 第1編 実験的皮下血腫内胆汁色素生成過程 en-subtitle= kn-subtitle= en-abstract= kn-abstract=1. The absorption maximum of oxyhemoglobin gradually shifted to the short wave length on the subcutaneous administration of blood to white rat and it displayed at 576, 572, 550, 490, 538, and 495 mμ and bilirubin displaying the absorption maxima at 478-480 mμ. And the product with the absorption maxima at 490 and 495 mμ was thought to be the iron acetate of bilirubin since the photometric and histochemical observations. 2. The absorption maximum of oxyhemoglobin shifted to the short wave length on the subcutaneous administration of blood to chicken, besides, a remarkable green pigment (biliverdin) was produced at the relatively early period and choleglobin with the absorpticn maximum at 630 mμ was identified with the absorption maximum of oxyhemoglobin at the same time. The region of biliverdin gradually shifted to bilirubin from the circumference. 3. The golden yellow hematoidin crystal appearing in bilirubin of yellow pigment displayed the absorption maximum at 478-480 mμ and it agreed with the absorption maximum on the subcutaneous injection of crystal billirubin in advance. Moreover. the absorption curve in the region with the collection of hematoidin crystal showed the most typical absorption curve of bilirubin. 4. The above results of absorption curve agreed with the results of histochemical studies by Nanba and Nishinobu in our department, and it was proved that the decomposition process of hemoglobin in vivo agreed with that of experiment in the test-tube. en-copyright= kn-copyright= en-aut-name=NishikawaShonosuke en-aut-sei=Nishikawa en-aut-mei=Shonosuke kn-aut-name=西川祥之介 kn-aut-sei=西川 kn-aut-mei=祥之介 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=11-2 article-no= start-page=7571 end-page=7576 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591030 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Isortion of Iron in the HbO(2)-KCN-H(2)O(2) Reaction System in Vitro Part III. Studies on So-called Easy Split Iron (G. Barkan) in the Hb-KCN-H(2)O(2) Reaction system kn-title=試験管内HbO(2)-KCN-H(2)O(2)反応系における鉄分離に関する研究 第3編 Hb-KCN-H(2)O(2)反応系における所謂易分離鉄(G. Barkan)の検討 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The Hb-KCN-H(2)O(2) reaction system was observed on the presence of nitrogen gas and CO gas, since the vicissitude of easy aplit iron. And the results were as follows. 1. Investigating this reaction system in the presence of nitrogen gas, the increase of easy spilt iron stopped for 30 minutes, but its yielded dosis was twice at 60 minutes after the aeration of oxygen. 2. Acting only KCN and H(2)O(2) in the HbO-KCN-H(2)O(2) reaction system under the nonoxygen condition, it reached up to the highest fixed value at 20 miuutes and the reaction did not show any progress on the aeration of oxygen after 20 minutes. 3. Acting KCN and H(2)O(2) to reduced hemoglobin, the increase of yielded dosis was abruptly seen around 5 minutes and it progressed slowly untill 60 minnutes, but the yielded dosis became 1.4 times on the aeration of oxygen at that time. 4. The slowness or quickness of reaction was observed on the action of KCN after the action of Hb and H(2)O(2) in the presence of nitrogen gas and on the action of H(2)O(2) after the action of Hb and KCN in the presence of nitrogen gas, but the yielded dosis was both 1.5 times after the action of molecular oxygen to them. 5. The Hb-KCN-H(2)O(2) reaction system was progressed in the presence of nitrogen gas, CO gas was acted to the reaction solutlon in each time and then the yielded dosis of easy split iron was observed, and the reaction stopped for 30 minutes, but the yielded dosis became twice on the aeration of oxygen to it. 6. The progress of the above reaction system could be explained without discrepancy by the concept of E. E' by G. Barkan and the condition of them at the isolated time in the presence of nitrogen gas or CO gas. 7. This reaction system progressed from Hb or HbO(2) and the direct progress from COHb could not be existed. en-copyright= kn-copyright= en-aut-name=FujiwaraTakuichi en-aut-sei=Fujiwara en-aut-mei=Takuichi kn-aut-name=藤原拓一 kn-aut-sei=藤原 kn-aut-mei=拓一 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=11-2 article-no= start-page=7565 end-page=7569 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591030 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Isortion of Iron in the HbO(2)-KCN-H(2)O(2) Reaction System in Vitro Part II. Studies on So-Called Easy Split Iron (G. Barkan) in the Hb(2)-KCN-H(2)O(2) Reactionssystem kn-title=試験管内HbO(2)-KCN-H(2)O(2)反応系における鉄分離に関する研究 第2編 HbO(2)-KCN-H(2)O(2)反応系における所謂易分離鉄(G. Barkan)の検討 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The vicissitude of easy split iron in the HbO(2)-KCN-H(2)O(2) reaction system put forward by G. Barkan was quantitatively observed, without the use of reducing agent. And the resulte were as follows. 1. The most proper condition grounded on the yielded dosis of easy split iron was KCN 1.0 M and H(2)O(2) 0.01 M. 2. Iron was separated from hemoglobin itself on H(2)O(2) over 0.1 M, in this reaction system. 3. The most proper condition was the pH 7.2 at 37°C, in this reaction system. 4. The change was not observed on the change of acting order between KCN and H(2)O(2), in this reaction system. en-copyright= kn-copyright= en-aut-name=FujiwaraTakuichi en-aut-sei=Fujiwara en-aut-mei=Takuichi kn-aut-name=藤原拓一 kn-aut-sei=藤原 kn-aut-mei=拓一 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=11-2 article-no= start-page=7559 end-page=7563 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591030 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Isortion of Iron in the HbO(2)-KCN-H(2)O(2) Reaction System in Vitro Part I. Studies on the Quantitative Method of by O-phonanthrolin in the Presence of KCN kn-title=試験管内HbO(2)-KCN-H(2)O(2)反応系における鉄分離に関する研究 第1編 KCN存在下に於けるO-Phenanthrolinによる鉄定量法に関する検討 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The quantitative method of iron in the presence of KCN or CO-gas, as the reserve experiment observing on the isolation of iron in the HbO(2)-KCN-H(2)O(2) reaction system put forward by G. Barkan, was investigated. And the results were as follows. 1. The isolated iron combined with CN and missed the measurement, but the error of measurement could be prevented by the heating process on the fire after the addition of concentrated sulphuric acid and perchloric acid. On the other hand, the measuring error caused by the contain of iron in reagent could be prevented by the use of ammonia instead of caustic soda. 2. It was necessary to stand in the room temperature for 24 hours after the o-phenanthrolin reaction for the measurement of iron by o-phenanthrolin in the reaction solution using phosphate buffer. 3. When the iron dosis in various buffer was measured, the aeration of CO gas had no influence on the measurement. 4. Measuring the dosis of easy split iron by the aeration of CO gas to hemoglobin for 30 minutes, it decreased about one half as compared with that before the aeration of CO gas and it showed only the reversion of 67% by the aeration of oxygen for 60 minutes. On the other hand, it showed the decrease of 70% by the aeration of nitrogen gas, but it completely reverted to the initial dosis by the aeration of oxygen for 10 minutes. en-copyright= kn-copyright= en-aut-name=FujiwaraTakuichi en-aut-sei=Fujiwara en-aut-mei=Takuichi kn-aut-name=藤原拓一 kn-aut-sei=藤原 kn-aut-mei=拓一 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=11-1 article-no= start-page=7409 end-page=7424 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19591020 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Clinical Studies on the Taste Part II Studies on the Correlation Amung the Contained Eubstance in Blood, the Acidity of Gaetric Fluid, the pH of Saliva and the Taste kn-title=味覚の臨床的研究 第2編 血液含有物質，胃液酸度及び唾液pHと味覚との関係に就て en-subtitle= kn-subtitle= en-abstract= kn-abstract=The corrlation among the cotained substance in blood, the acidity of fastric fluid the pH of saliva and the taste was observe on the attacked paiod and convalescen pariod of disease. And the resulte were as follows. 1. Observing on the correlation between the dosis of serum sodium and the throshold value of taste, the threshold value of sweed taste showed the high value in many cases with the low value of serum sodium at the attacked period of disease and it showed the declining tendency with the increase of serum sodium by the recovery of disease. No fixed correlation between the dosis of serum sodium a d the salt, sour or bitter taste was observed. 2. The correlation between the dosis of serum chloride and the threshold value of saste was similar to that on the occasion of serum sodium. 3. As for the correlation between the dosis of serum potassium and the threshold value of taste, many cases with the high value of serum potassium at the attacked period of disease showed the high value of serum potassium at the attacked period of disease showed the high threshold value of sweet and bitter taste and they showed the returning tendency to normal value at the convalescent perio with normal value of serum potassioum. No fixed correlation between the dosis of serum potassium and the threshold value of salt or sour taste was observed. 4. As for the correlation bet ween the dosis of serum iron and the threshold value of taste, the threshold value of bitter taste showed the tendency taking the high value on the low value of serum iron. The tendency was especially remerkable in the patients with anemia. No fixed relation between the dosis of serum iron and the threshold value of sweet, salt or sour taste was not observed. 5. As for the correlation between the dosis of serum copper and the threshold value of taste, the theshold value of sweet and sour taste showed the tendency to declins, as the dosis of serum copper became decreased at the attaked period of disease in many cases. And they showed the tendency to decline with the decrease of serum copper at the convalescent period, but no fixed correlation between the desis of rerum copper and the threshold value of salt or bitter taste. 6. The correlation between the increase or decrease of blood sugar at the hunger time and the rise of decline of the threshold value of sweet or sour taste was observed on various diseases, other than diabetes, In diabetes, the threshold value of sweet taste at the hunger time showeed the high valun, but no fixed correlation between the blood sugar at the hunger time and the threshold value of salt or bitter taste was observed. 7. No fixed correlation among the dosis of serum protein, the acidity of gastric fluid, the pH of saliva the threshold value of taste was observed. en-copyright= kn-copyright= en-aut-name=HondaKimiaki en-aut-sei=Honda en-aut-mei=Kimiaki kn-aut-name=本田公昶 kn-aut-sei=本田 kn-aut-mei=公昶 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=10-1 article-no= start-page=6377 end-page=6387 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590920 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Easily-Split-Off Iron (G. Barkan) Part 2. Easily-Split-Off iron in the Thoracic Duct Lymph during the Decomposition Processes of Hemoglobin into bile Pigment kn-title=易分離鉄 (Barkan, G.) に関する研究 第2編 生体内血色素より胆汁色素分解過程における胸管リンパ中の易分離鉄について en-subtitle= kn-subtitle= en-abstract= kn-abstract=With the purpose to elucidate the properties of the thoracic duct lymph during the production of bile pigment in vivo, the author pursued the changes in the amounts of easily-split-off iron and free iron in lymph and in hemoglobin content by creating thoracic duct fistula in normal dogs, in dogs administered carbon tetrachlorice or in dogs occluded of RES, and then by lording physiological saline solution or hemoglobin solution into the femoral vein or peritoneal vein of these animals, and compared these results with contents in blood. The following are the results. 1. In the normal dogs the content of easily-split-off iron in lymph increases transiently later than that in blood, but the changes in both are somewhat parallet to one another. 2. In the case with liver disorders the increase in the blood easily-split-off iron is slow or undetectable, while on the contrary, the easily-split-off iron in lymph increases slower than in normal animal but distinctly. 3. Since a large quantity of the injected hemoglobin is transferred to lymph in the case with liver disorders, the major portion of easily-split-off iron produced due to the liver disorders, though the amount produced is trivial, seems to be transferred to lymph. 4. In the case occluded of the RES the increase of easily-split-off iron in lymph is slow and small in amount. 5. The easily-split-off iron in lymph is the one produced in the liver from hemoglobin and then transferred to lymph, while the easily-split-off iron in blood is also a portion of the same produced in the liver but transferred directly to blood. en-copyright= kn-copyright= en-aut-name=NakajimaMasayuki en-aut-sei=Nakajima en-aut-mei=Masayuki kn-aut-name=中島行正 kn-aut-sei=中島 kn-aut-mei=行正 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=10-1 article-no= start-page=6367 end-page=6375 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590920 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Easily-Split-Off Iron (G. Barkan) Part 1. The Properties of Easily-Split-Off Iron, E and E' kn-title=易分離鉄 (Barkan, G.) に関する研究 第1編 E, E'の本態について en-subtitle= kn-subtitle= en-abstract= kn-abstract=The author conducted a series of experiments on Barkan's easily-splitoff iron E and E' and obtained the following results. 1. There are distinct differences between the inhibtory action of carbor mcnoxide and that of inactivated gas on choleglobin liberating iron. 2. In the estimation of E and E' in ten abult males, the average sum of E and E' has been found to be 1.52 mg%, with E' being 0.34 mg%, and E occupies 77.33 per cent of the total. This value is somewhat higher than that of Barkan. 3. In the study of various conditions of reagent, governing the reaction, when the reaction is made to take place at 0°C without any supply of oxygen, it is retarded most markedly, but it is not completely stopped. 4. In the reagent the decomposition progresses from hemoglobin to E and E' but an exact quantitative analysis has been difficult. en-copyright= kn-copyright= en-aut-name=NakajimaYukimasa en-aut-sei=Nakajima en-aut-mei=Yukimasa kn-aut-name=中島行正 kn-aut-sei=中島 kn-aut-mei=行正 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=10-1 article-no= start-page=6333 end-page=6341 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590920 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Intermediate Products of Bile Pigment Formation Utilizing Rapioactive Iron in Vitro Part 2. Chromatographic Studies on Intermediate Products from Hemoglobin to Bile Pigment kn-title=放射性鉄による試験管内胆汁色素生成中間産物に関する研究 第2編 血色素より胆汁色素生成中間産物のChromatographyによる検討 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The following deduction were obtained, reacting traceable Fe(59) hemoglobin solution with 1-ascorbic acid under absence of oxygen, and subsequently observated the formed intermediate products in the column chromatography as the time elapsed. 1) The column stratified into four layers in 4 hours after initial reaction and into 3 layers 8 hours after start of reaction. Colors and distribution of strata differed at corresponding reacton times. 2) Total iron distribution differred with corresponding absorption layer and reaction time. 3) The hourly increase of total iron in the first stratum was due mostly to increase of easily split off iron. 4) Total iron content of second layer was small and hourly change was minute, however at the start of the reaction the presence of easily split off iron was exceedingly large. Although easly split off iron content reduction was fast in comparison with other layers it appeared as though this layer was the initiator of reaction progress. 5) Total iron content was largest in the third layer, but the quantity of easily split off iron was exceedingly small and hourly change was lacking. 6) Against the fast rate of reduction of total iron content of the fourth layer, the easily split off iron increased at a fast rate. 7) Easily split off iron content was always higher than the iron content immediately after the hydrochloric acid addition or so called free iron. 8) The presence of the so called free iron is obvious, but it was not clear whether it was the natural free iron it was due to trichloro-acetic acid. 9) Differing from other layers, the iron in the first layer was harder to ionize. 10) Biliverdin was analysed from all layers but parallel between its content and that of easily split off iron was not recognized. en-copyright= kn-copyright= en-aut-name=KikkawaKoji en-aut-sei=Kikkawa en-aut-mei=Koji kn-aut-name=吉川浩二 kn-aut-sei=吉川 kn-aut-mei=浩二 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=10-1 article-no= start-page=6321 end-page=6331 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590920 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Intermediate Products of Bile Pigment Formation Utilizing Rapioactive Iron in Vitro Part 1. Chromatographic Studies on Intermediate Products from Pyridine-hematin to Bile Piment kn-title=放射性鉄による試験管内胆汁色素生成中間産物に関する研究 第1編 Pyridine-hematinより胆汁色素生成中間産物のChromatographyによる検討 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Traceable Fe 55 hemin was dissolved in 20% pyridine water solution, then 1-ascorbic acid was reacted in absence of oxygen. Column chromatography was observed on the reaction mixture of each reacting time. Studies were made on the water solution of the divisible absorption layers and following deductions were obtained. 1) Hourly observations of chromatogram were always in 4 layers and their respective colors and distributions were different. Additionally the fouth layer, due to the failure of retaining it in the absorption column in spite of various manipulations attempted, was collected as a gravity flow effluent. 2) Distribution of the total iron was different with respective layer and reacting time, but there was iron which would not dissolve in water due its remaining in the absorption column unber ionic combination and with increased with the reaction progress. 3) Total iron in the first layer was very small i. e. traceable degree and the greater part of it was easily split off iron. Biliverdin was undetectable therefore absorption curve worth mentioning was obtainable. 4) Conversely with the hourly decrease of total iron in the second layer, easily split off iron increased with the reaction progress. The amount of Biliverdin was highest at the end of four hours. In the absorption curve the peak absorptions of 610 mμ was observed right after the initiation of reaction and after one hour which was believed to be due to pyridine-hemichromogen being absorbed. 5) Total iron of the third layer was exceedingly small and most part of it was easily split off iron. The quantity of Biliverdin was highest at the end of fourth hour. Absorption curve was not obtainable. 6) For the fourth layer total iron showed the peak at the end of four hours but the value for the easily split off iron was relatively high throughout and little deflection was observed for all reaction progress. Biliverdin content was highest in this layer and highest at the fourth hour. With reference to the absorption curve at the initial reaction stage 3 maximum peaks of 656, 530 and 500 mμ were observed. This was parallel with protoverdohemochrome. With the progress of reaction this was equal with the 656 mμ of pyridineverdohemochromogen. 7) The quantity of easily split off iron, that of ron just after the addition of hydrochloric acid and so called free iron was parallel but value of easily split of iron content was higher throughout. Moreover the quantity of easly split off iron and Biliverdin quantity did not show parallel relation to each other. 8) Permeating liquid could be observed after 2 hours reaction. The colour of the liquid was light strow at the begining and as the time elapsed brownish tinge increased. Also the quantity of total iron increased with time lapse but notable absorption curve was not obtainable. Presence of Biliverdin could not be proven qualitatively. en-copyright= kn-copyright= en-aut-name=KikkawaKoji en-aut-sei=Kikkawa en-aut-mei=Koji kn-aut-name=吉川浩二 kn-aut-sei=吉川 kn-aut-mei=浩二 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第一内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=10-1 article-no= start-page=6311 end-page=6319 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590920 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Leukemia Part 3. Iron Loading Tests for the Patients with Various Leukemias kn-title=白血病に関する研究 第3編 各種白血病患者に対する鉄負荷試験について en-subtitle= kn-subtitle= en-abstract= kn-abstract=The author made a comparative study of serum iron and serum copper contents in various leukemias that had been definitely diagnosed by their bone-marrow tissue culture conducted in our department. Simultaneously the author performed the intravenous iron loading tests and the iron-absorption tests with various leukemias, and obtained the following results. However, in the present comparative study on the serum iron and copper, chronic lymphocytic leukemia is excluded as the number of such cases were too small. 1. In comparing the average value of the serum iron content, acute lymphocytic leukemia shows the greatest value, followed by those of acute myelogenous leukemia, monocytic leukemia, and chronic myelogenous leukemia in the descending order mentioned. The serum copper content is greatest in acute lymphocytic leukemia, and in the descending order of monocytic leukemia, acute myelogenous leukemia, and chronic myelogenous leukemia. Judging monocytic leukemia from the standpoint of its serum iron content, this type also proves to be an intermediary type between acute type and chronic type. 2. In the intravenous iron-loading tests and iron-absorption tests of various leukemias the increased content and decreased content in either case proved to be lower. Moreover, the serum copper content by the iron-loading tests shows hardly any change. 3. In the iron-loading tests likewise no difference can be recognized in various types of leukemia. en-copyright= kn-copyright= en-aut-name=MatsuyamaTsuneo en-aut-sei=Matsuyama en-aut-mei=Tsuneo kn-aut-name=松山恒男 kn-aut-sei=松山 kn-aut-mei=恒男 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=9-1 article-no= start-page=5501 end-page=5504 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590830 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Metabolism of Ferric Iron Instillated into Vein Part 3. The Liver Catalase Activities under the Influences of Various Iron Compounds instillated into the vein of Phenylhydrazin Anemic Rabbits kn-title=静脈内に導入された鉄の代謝に関する研究 第3編 Phenylhydrazin貧血家兎に対する各種鉄剤静脈内注入の影響する肝カタラーゼ活性に関する研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The estimation for the catalase activity has been carrid out in the liver of the anemic rabbits mentioned in Part 2. The purpose of the present study is to see whether or not any changes are brought about by the iron instillation in the iron containing enzymes other than Hb. As the result, in the animals given a daily injection of 0.5 mg of such compounds, it has been found that serum iron colloid (S. I. C.) accelerates the activity of the liver catalase most markedly, and the grades of the rise in the catalase activity grow poorer in the descending order of ferrobalt, gelatin iron, and gluferricon. However, when a large dose is injected at one time, irrespective of which compound is used, no change occurs in the catalase activity of the liver, in a strange contrast to the control. This fact indicates that Fe(+++), when instillated into vein in a certain fixed from in a small dose at a time, readily enters into the normal metabolic cycle, but it will have hardly any enhancing effect when the same is administered in a large dose at one time, i. e. in the excess of the optimal amount en-copyright= kn-copyright= en-aut-name=OgoHiroyuki en-aut-sei=Ogo en-aut-mei=Hiroyuki kn-aut-name=小河博之 kn-aut-sei=小河 kn-aut-mei=博之 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部病理学教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=9-1 article-no= start-page=5493 end-page=5499 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590830 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Metabolism of Ferric Iron Instillated into Vein Part 1. The Maturation of Reticulocytes in vivo after Ferric Iron Instillation into vein, especially the Action of Serun Iron Colloid (S. I. C.) in Blood-depleting Anemia kn-title=静脈内に導入された鉄の代謝に関する研究 第1編 三価鉄静脈内注入後の網赤血球の生体内に於ける成熟現象について，特に瀉血貧血に於けるserum iron colloidの作用 en-subtitle= kn-subtitle= en-abstract= kn-abstract=According to Seno et al. it is said that when a small of the so-called "asparagine iron" preparated by mixing asparagine and Fecl3 in a proper proportion, is instillated into vein, reticulocytes (RC) decrease markedly in number within a few hours. Such a change in the number of RC without any cocurrent change in the amount of Hb is understood to be due to the maturation of young RC, but its mechanism has remained still unclarified. However, it is easy to understand that this phenomenon will be dependent upon the accelerative action of iron on the hemoglobin synthesis, with the purpose to elucidate such a mechanism the author carried out experiments to find out whether or not there are some other substances possessing the action identical with "Asparagine iron", and obtained the following results: It has been found that serum iron colleid prepared by mixing FeCl(3) with serum and also the "ferritrat" from Nordmark in Germany both possess the action similar to that of asparagine iron. Namely, when 0.25 mg/kg. of either one of these substances is instillated into vein as ferric iron, within 2 to 3 hours reticulocytes decrease one half to one tenth of the original number. However, no such action can be recognized in gluconic iron or dextran iron available. en-copyright= kn-copyright= en-aut-name=OgoHiroyuki en-aut-sei=Ogo en-aut-mei=Hiroyuki kn-aut-name=小河博之 kn-aut-sei=小河 kn-aut-mei=博之 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部病理学教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=7-2 article-no= start-page=4223 end-page=4236 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590710 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Influences of Toxins of Salmonella Typhi, Salmonella Paratyphi A, B and Escherichia Coli on Bone-Marrow Tissue Culture Part. 1. Influences of toxins of S. typhi, S. paratyphi A, B and E. coli on the bone-marrow tissue culture of rabbits and human -by cover-slip method and culture in fluid medium- kn-title=腸チフス，パラチフスA，B並びに大腸菌毒素の骨髄培養に及ぼす影響について 第1編 腸チフス，パラチフスA，B並びに大腸菌毒素の家兎及び人骨髄培養（被覆培養，液体培養）に及ぼす影響について en-subtitle= kn-subtitle= en-abstract= kn-abstract=By loading toxins of S. typhi, S. paratyphi A, B, and E. coli to the bone-marrow tissue culture of normal rabbits as well as loading toxins of E. coli and S. typhi to the bone-marrow tissue culture of normal persons, the author studied the influences of these toxins on the tissue growth; and also by adding the toxins of the same bacilli to the bone-marrow tissue culture of normal rabbits in fluid medium, pursued the influences on the increasing rate of erythrocyte count and hemoglobin content. Further, by loading the serum of patient with typhoid fever to th bone-marrow tissue culture of normal rabbits the author observed the influences of the serum on the tissue growth, and obtained the following results. 1. The toxins of S. typhi and S. paratyphi A and B both possess the action inhibiting the leucopoetic functions of the rabbit bone marrow to the greatest degree, while the toxin of E. coli shows hardly any effect. Moreover, the influences of the toxins of S. typhi and E. coli on the bone-marrow tissue of normal persons are exactly identical with those against the bone marrow of normal rabbits. From these results it is assumed that a direct action of the toxins of S. typhi disturbing the bone-marrow functions plays an important role in causing the leukopenia in typhoid fever. 2. It has been recognized that in the serum of the serum of the patient with typhoid fever there exist factors that directly inhibit the growth of the normal rabbit bone marrow tissue. 3. The direct action of these toxins on the erythrocytes and hemoglobin content in the normal rabbit bone marrow is not so significant. Therefore, the iron-retention in the reticuloendothelial system and another secondary reaction, which are the commonly accepted theory, seem to play a leading role for the anemia in typhoid fever. en-copyright= kn-copyright= en-aut-name=MotokuraKiyoshi en-aut-sei=Motokura en-aut-mei=Kiyoshi kn-aut-name=本倉潔 kn-aut-sei=本倉 kn-aut-mei=潔 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=7-1 article-no= start-page=4055 end-page=4067 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590630 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Functions of the Reticuloendothelial System Part 3. A study on the RES functions and iron metabolism with the use of radioactive iron kn-title=網内系機能に関する研究 第三編 放射性鉄による網内系機能と鉄代謝に関する研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Using radioactive iron (Fe(59)) the author studied the processes of the iron metabolism at the time when the RES functions are changed and obtained the following results. 1. With the intravenous injection of Fe(59) the author pursued the iron distribution in the viscera of the rabbits with hypoferremia induced by the administration of various adrenocortical hormones and autonomic nerve stimulants, and studied the destiny of disappearing serum iron and investigated what relation these results will have with the RES functions. As the results it has been found that ACTH, DOCA, and acetylcholine seem to act as to accelerate the functions of RES, especially the iron metabolism, and make RES take up the serum iron in the viscera, especially hemosiderin and ferritin fractions of non-hemin iron. In the case of cortisone and adrenalin about the same tendency can be observed but the results are not so distinct as in the former. 2. In the investigation of the iron distribution in the viscera by injecting Fe(59) intravenously to the rabbits whose RES is blocked by collargol, it has been found that on the whole the uptake of iron from serum by RES is decreased when the functions of RES are disturbed. en-copyright= kn-copyright= en-aut-name=NakayamaAkitoshi en-aut-sei=Nakayama en-aut-mei=Akitoshi kn-aut-name=中山章壮 kn-aut-sei=中山 kn-aut-mei=章壮 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=7-1 article-no= start-page=4043 end-page=4054 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590630 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Functions of the Reticuloendothelial System Part 2. Relationship between the RES functions and the iron metabolism kn-title=網内系機能に関する研究 第二編 網内系機能と鉄代謝の関係に就て en-subtitle= kn-subtitle= en-abstract= kn-abstract=With the purpose to elucidate the influences of the change in the RES functions on the iron metabolism the author studied the iron metabolism in the rabbits injected with ACTH, DOCA, cortisone, adrenalin, acetylcholine, atropine, and ergotamine, as well as in the rabbits blocked of RES by carbon black solution or by collargol, and obtained the following results. 1. The serum iron is decreased by the administration of such drugs as ACTH, DOCA, cortisone, adrenalin, acetylcholine, atropine and ergotamine. When RES is blocked, the decreasing action on the serum iron by these drugs in suppressed. Therefore, it seems that these drugs act as to accelerate the functions of RES, especially the iron metabolism, and that they make RES take up the serum iron. 2. From the standpoint of the iron metabolism, it has been difficult to find any correlation between the action of these drugs on the RES functions and the influences of these drugs on the RES functions as represented by the phagocytotic ability of foreign substances, the method commonly used in the determination of the RES functions. 3. The results of examination of the iron metabolism at the time when RES is blocked by carbon black or collargol are as follows: (a) the serum iron content decreases at an early stage of the blocking, but it tends to increase at an later stage; (b) at the time when RES is blocked, the rate of iron consumption in the blood in which iron is injected intravenously, is low; and (c) the amount of iron stored in the viscera, especially in the liver, rather tends to decrease. Judging these results with a special reference to RES, the influences of the decrease in the RES functions on the iron metabolism when RES is blocked may be interpreted as to cause a fall in the iron uptake from the blood by RES and to bring about the concurrent decline in the retentive power of iron in RES. en-copyright= kn-copyright= en-aut-name=NakayamaAkitoshi en-aut-sei=Nakayama en-aut-mei=Akitoshi kn-aut-name=中山章壮 kn-aut-sei=中山 kn-aut-mei=章壮 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=7-1 article-no= start-page=3967 end-page=3981 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590630 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Iron-Copper Metabolism in Idiopathic Hypochromic Anemia Part 3. Influences of the serum of idiopathic hypochromic anemia on the non-hemin iron metabolism of the rabbit with the use of radioactive iron kn-title=本態性萎黄貧血に於ける鉄・銅代謝に関する研究 第3篇 放射性鉄を中心として,患者血清が家兎のNon-hemin鉄代謝に及ぼす影響に関する研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=By administering orally and paraenterally radioactive iron to the rabbits previously injected with the serum of idiopathic hypochromic anemia, the author obtained the following results. 1. In observing the distribution of radioactive iron in each of non-hemin iron fractions in the liver, spleen, bone marrow and kidneys of the rabbit given the intravenous injection of Fe(59), the radioactivity is highest in the bone marrow and moreover, it is highest in the part one fraction (P(I) fraction). 2. In the observations carried on the disappearance of radioactive iron from blood plasma and appearance in erythrocytes after the oral administration of Fe(55), it appears early and to a higher degree in the plasma but it disappears almost completely within 24 hours as compared with the control. The appearance of it in erythrocytes is likewise rapid and to a high degree, and with lapse of time Fe(55) increases abruptly. 3. Observing the distribution of radioactive iron in the liver, spleen, bone marrow, and duodenum 48 hours after the oral administration of Fe(55), the amount is greatest in the liver, followed by that in the bone marrow, and in the spleen in the order mentioned. In the liver non-hemin iron fractions, P(I) fraction contains the highest radioactivity, and next the P(III) fraction also shows a relatively high value. In the duodenum P(I) fraction contains the highest value and likewise in the spleen it is highest in the same fraction, but no great difference can be observed as compared with the control. From these results obtained by the administration of the serum of this disease the changes of the iron metabolism of rabbit, especially of the non-hemin iron metabolism, seem to be all due to the acceleration of the hematopoietic function in the bone marrow and the increased demand for iron in vivo, and as for the iron absorption in the duodenum it appears there is no disturbance at least from the result of observations in (2), nevertheless, from the increase in the non-hemin iron content observable and from a relatively low specific activity in this organ it seems that the disturbance in the iron absorption can not completely ruled out. en-copyright= kn-copyright= en-aut-name=OkumuraKazutoshi en-aut-sei=Okumura en-aut-mei=Kazutoshi kn-aut-name=奥村一敏 kn-aut-sei=奥村 kn-aut-mei=一敏 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=7-1 article-no= start-page=3955 end-page=3966 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590630 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Iron-Copper Metabolism in Idiopathic Hypochromic Anemia Part 2. Influence of the serum of idiopathic hypochromic anemia kn-title=本態性萎黄貧血に於ける鉄・銅代謝に関する研究 第2編 本症患者血清が家兎の鉄・銅代謝に及ぼす影響に関する研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=In the present experiment the author studied the influences of the serum obtained from patients with idiopathic hypochromic anemia on the iron-copper metabolism of rabbits, and obtained the following results. 1. By successive injections of the serum of this disease no change occurs in the number of erythrocytes of rabbits, but the hemoglobin content decreases somewhat. Serum iron is moderately decreased while serum copper is slightly or moderately increased. 2. As for the non-hemin iron content in the viscera of the rabbit given successive injections of the serum of this disease, it tends to decrease in the liver and spleen, but it is markedly inceased in duodenum while it shows a tendency to increase slightly in the bone marrow. These findings seem to suggest that there are the acceleration in the hematopoietic function of bone marrow and the disturbance in the iron absorption via the intestinal tract. 3. As for the copper content in the viscera of the rabbit successively administered the serum of this disease, it is markedly increased in the liver; slightly increased in the kidneys; but it shows no great change in the spleen, bone marrow and duodenum. 4. The bone marrow picture of the rabbit receiving successive injections of the serum of this disease clearly shows the acceleration of hematopoietic function. From these findings it can be deduced that in the serum of this disease there exist factors that induce the acceleration of the bone marrow hematopoietic function, namely, the factor accelerating the iron consumption and impeding the iron absorption from the intestinal tract, and that these two factors are involved in inducing this disease. en-copyright= kn-copyright= en-aut-name=OkumuraKazutoshi en-aut-sei=Okumura en-aut-mei=Kazutoshi kn-aut-name=奥村一敏 kn-aut-sei=奥村 kn-aut-mei=一敏 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=7-1 article-no= start-page=3939 end-page=3953 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590630 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Iron-Copper Metabolism in Idiopathic Hypochromic Anemia Part 1. The iron-copper metabolism in idiopathic hypochromic anemia kn-title=本態性萎黄貧血に於ける鉄・銅代謝に関する研究 第1篇 本症患者に於ける鉄・銅代謝について en-subtitle= kn-subtitle= en-abstract= kn-abstract=In the pathophysiological study on the iron-copper metabolism in idiopathic hypochromic anemia the author obtained the following results. 1. In the estimation of the contents of serum iron and copper in the patients with this disease it has been found that serum iron is markedly decreased while serum copper is normal, but showing a marked decrease in the iron-copper ratio. This indicates that in this disease there is a marked change in the iron metabolism while no marked change in the copper metabolism. 2. Iron absorption and intravenous iron injection tests show that this disease demands and utilizes iron actively, and that depending upon the kind of iron administered, the ironabsroption curve is not low, presenting hardly any difference from that of normal persons. In additon, when the change of the serum copper is estimated at the same time, it differs from that of normal persons in that it steadily maintains a certain fixed level. These findings are interpreted to be due to the fact that in the disease such as this which seem to demand iron actively and utilize it immediately as the material for hematopoiesis, a certain fixed amount of copper is always required in order that the hematopoiesis in the bone marrow may function smoothly. 3. There is no great difference in the amount of iron excreted in the urine of this disease as compared with that of normal person, so that it seems not necessary to consider the iron excretion as to be the cause of iron deficiency. Although copper excreted in the urine is somewhat greater than in the case of normal persons, it does not seen to have any significant influence from the standpoint of the copper metabolism. Consequently, the copper metabolism in this disease seems to be carried out rather normally and therefore, copper seems to play no important role directly inducing anemia. 4. In this disease when ACTH is administered intramuscularly, the serum iron content does not change and the serum copper content increases. The amount of iron excreted in the urine tends to decrease while that of copper tends to increase, proving that adrenocortical hormone affects the ironcopper metabolism in this disease. 5. When this disease is treated with Dextran iron, it has a therapeutic effect, and also showing peculiar changes in the contents of serum iron and copper at the time of anemia recovery, it has been confirmed that copper plays a role involving in the iron metabolism of anemia. en-copyright= kn-copyright= en-aut-name=OkumuraKazutoshi en-aut-sei=Okumura en-aut-mei=Kazutoshi kn-aut-name=奥村一敏 kn-aut-sei=奥村 kn-aut-mei=一敏 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科教室 END start-ver=1.4 cd-journal=joma no-vol=71 cd-vols= no-issue=6-2 article-no= start-page=3209 end-page=3216 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=19590515 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Study on the Anemia in Rabbit Produced by Toxohormone Part 2. On the Liver Catalase, Blood Catalase and Serum Iron in Rabbit Following Injection of Toxohormone kn-title=トキソホルモンに依る家兎の貧血に関する研究 第2編 トキソホルモン注射による家兎肝カタラーゼ，血液カタラーゼ，血清鉄について en-subtitle= kn-subtitle= en-abstract= kn-abstract=Liver catalase, blood catalase and serum iron were determined in rabbit following injection of Toxohormone, a special toxic substance in the cancer tissue, for studying the each relationship. Results obtained were as follows: 1) Liver catalase activity was markedly decreased. 2) No changes in blood catalase, blood catalase index and hemoglobin catalase index were noted. 3) Serum iron was noticeably decreased, preceding decrease in red cells and blood hemoglobin. It has been considered that the iron was adsorbed and seized by the action of Toxohormone, resulting the decrease in the liver catalase followed by anemia. en-copyright= kn-copyright= en-aut-name=HanaokaAtsumi en-aut-sei=Hanaoka en-aut-mei=Atsumi kn-aut-name=花岡篤実 kn-aut-sei=花岡 kn-aut-mei=篤実 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第二外科教室 END start-ver=1.4 cd-journal=joma no-vol=101 cd-vols= no-issue=9-10 article-no= start-page=941 end-page=952 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=198910 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Transferrin release by human peripheral blood mononuclear cells kn-title=膠原病患者末梢血単核細胞からのトランスフェリンの放出異常 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The concentration of human transferrin (TF) in culture supernatants and intracellular TF contents of normal human peripheral blood mononuclear cells (MNC) after incubation with or without mitogens (PHA, ConA, PWM) for different periods of time were measured by enzyme-linked immunosorbent assay. TF concentrations in culture supernatant tended to gradually increase from the beginning of MNC culture to a peak at day 3 to 5. In contrast, intracellular concentrations of TF were decreased after MNC culture in parallel with the increase of TF concentration in the supernatants. The presence of mitogens mostly diminished TF concentrations in culture supernatant at the time when DNA synthesis maximally occurred. Transferrin release from MNC cultured at 4°C was minimal. A higher iron ion concentration of the culture medium suppressed the TF release from MNC. These results suggested that TF was actually released from MNC when cells were resting but in active metabolism at low iron concentration. In addition, the kinetics of TF release by MNC from systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA) patients were different from that of healthy controls. Low spontaneous TF release from SLE MNC through the culture and higher TF release from RA MNC in PHA stimulation after culture for 5 days were observed. These abnormalities found in SLE and RA might be one of causes of the low responsiveness of MNC in these patients to various mitogens. en-copyright= kn-copyright= en-aut-name=HatanoMakoto en-aut-sei=Hatano en-aut-mei=Makoto kn-aut-name=波多野誠 kn-aut-sei=波多野 kn-aut-mei=誠 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第三内科学教室 en-keyword=human peripheral blood mononuclear cells kn-keyword=human peripheral blood mononuclear cells en-keyword=lymphocyte proliferation kn-keyword=lymphocyte proliferation en-keyword=transferrin release kn-keyword=transferrin release en-keyword=transferrin receptor kn-keyword=transferrin receptor en-keyword=IL-2 receptor kn-keyword=IL-2 receptor END start-ver=1.4 cd-journal=joma no-vol=101 cd-vols= no-issue=7-8 article-no= start-page=733 end-page=742 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19890831 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies of iron metabolism of the lung Part 2. An electron microscopic study of ferritin synthesis in alveolar macrophages kn-title=肺における鉄代謝に関する研究 第2編 肺胞マクロファージのフェリチン合成能に関する電顕学的検討 en-subtitle= kn-subtitle= en-abstract= kn-abstract=In order to clarify the role of alveolar macrophages (alv Mφ) in the iron metabolism of the lung, ultrastructural findings of cells obtained by bronchoalveolar lavage were studied by transmission electron microscopy in rats after inhalation of saccharated iron oxide and welding fumes as well as a patient with welder's lung. Alv Mφ of rats which had inhaled saccharated iron oxide formed phagosomes and secondary lysosomes 4 hours after inhalation. The first day after inhalation, many ferritin particles were seen in cytosol and formed a diffuse patterns; 19% of alv Mφ had ferritin particles in a paracrystalin arrangement in the secondary lysosomes. Electron micrographs of alv Mφ at 3, 6, 14, and 28 days after inhalation showed an increase of the cells with ferritin particles. Alv Mφ of rats which had inhaled welding fumes phagocytized those iron particles and also synthesized ferritin particles in the cytosol and secondary lysosomes 6 days after inhalation. Numerous ferritin particles were seen in the cytosol and secondary lysosomes of alv Mφ from a patient with welder's lung as well. These results suggest that inhaled iron was phagocytized by alv Mφ and stored in the cytosol by binding with apoferritin which was synthesized by the ribosomes. en-copyright= kn-copyright= en-aut-name=FujiwaraKanta en-aut-sei=Fujiwara en-aut-mei=Kanta kn-aut-name=藤原寛太 kn-aut-sei=藤原 kn-aut-mei=寛太 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第二内科学教室 en-keyword=フェリチン kn-keyword=フェリチン en-keyword=担鉄肺胞マクロファージ kn-keyword=担鉄肺胞マクロファージ en-keyword=溶接工肺 kn-keyword=溶接工肺 en-keyword=ラット kn-keyword=ラット en-keyword=透過型電顕 kn-keyword=透過型電顕 END start-ver=1.4 cd-journal=joma no-vol=101 cd-vols= no-issue=7-8 article-no= start-page=723 end-page=732 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19890831 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies of iron metabolism of the lung Part 1. Influence of inhaled iron on iron metabolism of an experimental welder's lung kn-title=肺における鉄代謝に関する研究 第1編 実験的溶接工肺における吸入鉄の代謝について en-subtitle= kn-subtitle= en-abstract= kn-abstract=In order to clarify the mechanism of elevated iron stores in welder's lungs, the cellular contents of bronchoalveolar lavage (BAL) fluid, the serum iron, total iron binding capacity, liver non-hemin iron and histological findings were examined in experiments using Wister rats exposed to inhalation of welding fumes for 4, 8, Total cell counts, the percentage of neutrophils and iron laden alveolar macrophages in the BAL fluid increased after continuous inhalation, but they were decreased 3 months after inhalation. Serum iron, transferrin saturation, and liver non-hemin iron in rats exposed to inhalation for 8 and 12 weeks were significantly elevated (p<0.01). Iron stores of rats 3 months after inhalation were elevated more than levels 1 week after inhalation. Histological findings in the lung showed a slight thickening of alveolar wall with cellular infiltration. Iron was deposited predominantly in alveolar macrophages of the alveolar space and in connective tissue macrophages. Iron deposition was also seen in the red pulp of the spleen after inhalation. These data suggest that iron was highly stored in the whole body of patients with welder's lung, and that alveolar macrophages play an important role in the iron metabolism of the lung. en-copyright= kn-copyright= en-aut-name=FujiwaraKanta en-aut-sei=Fujiwara en-aut-mei=Kanta kn-aut-name=藤原寛太 kn-aut-sei=藤原 kn-aut-mei=寛太 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部第二内科学教室 en-keyword=溶接フューム kn-keyword=溶接フューム en-keyword=気管支肺胞洗浄 kn-keyword=気管支肺胞洗浄 en-keyword=溶接工肺 kn-keyword=溶接工肺 en-keyword=鉄過剰症 kn-keyword=鉄過剰症 en-keyword=ラット kn-keyword=ラット END start-ver=1.4 cd-journal=joma no-vol=102 cd-vols= no-issue=3-4 article-no= start-page=453 end-page=463 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=199004 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Acetylcholine turnover on the experimental epileptic focus of the rat cerebral cortex kn-title=鉄イオン脳内注入による実験的てんかん原性焦点組織におけるacetylcholine代謝の研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The effect of iron ion injection on acetylcholine (ACh) turnover was studied in the cerebral cortex of male Sprague-Dawley rats. Rats were divided into 3 groups: rats of the Fe-group were injected with 500 nmol of Fe(3+) in the left sensorimotor cortex, rats of the HCl-group were injected with HCl-acidified saline (pH 1.8) in the left sensorimotor cortex, and a shamoperated group acted as a control (Sham-group). On both sides of the cortex, the choline acetyltransferase (CAT) activity of the HCI- and Fe-groups decreased 30 min after, increased 6h after, and then decreased 24h after the injection compared with the activity of the Sham-group. A no time was there any difference between the CAT activities of the HCl- and Fe-groups. On both sides of the cortex, the ACh content of the HCl- and Fe-groups decreased transiently 24h after injection, but there was no difference in ACh content between the two groups. In the left cortex of the Fe- and HCl-groups, acetylcholinesterase (AChE) activity, which showed no difference between the two groups, decreased 30 min after injection. These findings suggested that cortical neurons especially AChergic neurons might be irritated by a transient increase in intracranial pressure due to brain edema induced by the injection of acid into the cortex, as no specific effct of Fe(3+)-injection was observed in this study. en-copyright= kn-copyright= en-aut-name=KawakamiYunosuke en-aut-sei=Kawakami en-aut-mei=Yunosuke kn-aut-name=河上雄之介 kn-aut-sei=河上 kn-aut-mei=雄之介 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部脳代謝研究施設機能生化学部門 en-keyword=acetylcholine turnover kn-keyword=acetylcholine turnover en-keyword=head injury kn-keyword=head injury en-keyword=choline acetyltransferase kn-keyword=choline acetyltransferase en-keyword=cholinesterase kn-keyword=cholinesterase en-keyword=brain edema kn-keyword=brain edema END start-ver=1.4 cd-journal=joma no-vol=64 cd-vols= no-issue=5 article-no= start-page=277 end-page=283 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201010 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Glycocalyx Degradation in Retinal and Choroidal Capillary Endothelium in Rats with Diabetes and Hypertension en-subtitle= kn-subtitle= en-abstract= kn-abstract=Endothelial glycocalyx (GCX) has been reported as a protective factor for vascular endothelial cells (VEC) in diabetes and hypertension. However, the involvement of GCX impairment in ocular vasculopathy remains unclear. We evaluated the changes in the GCX thicknesses of the retinal and choroidal capillaries in rats with diabetes and hypertension by cationic colloidal iron staining using a transmission electron microscope. In the control group, the mean (standard error of the mean) thicknesses of retinal and choroidal GCX were 60.2 (1.5) nm and 84.3 (3.1) nm, respectively. The diabetic rats showed a significant decrease of GCX thickness in the retina, but not in the choroid, compared to controls (28.3 (0.3) nm, p＜0.01 and 77.8 (1.4) nm, respectively). In the hypertensive rats, both retinal and choroidal GCX were significantly decreased compared to the control values (10.9 (0.4) nm and 13.2 (1.0) nm, respectively, both p＜0.01). Moreover, we could visualize the adhesion of leukocytes and platelets on the luminal surface of VEC, at the site where the GCX was markedly degraded. These findings suggest that the GCX prevents adhesion of leukocytes and platelets to the VEC surface, and this impairment may lead to ocular vasculopathy in diabetes and hypertension. en-copyright= kn-copyright= en-aut-name=KumaseFumiaki en-aut-sei=Kumase en-aut-mei=Fumiaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MorizaneYuki en-aut-sei=Morizane en-aut-mei=Yuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MohriSatoshi en-aut-sei=Mohri en-aut-mei=Satoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TakasuIppei en-aut-sei=Takasu en-aut-mei=Ippei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OhtsukaAiji en-aut-sei=Ohtsuka en-aut-mei=Aiji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=OhtsukiHiroshi en-aut-sei=Ohtsuki en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=2 en-affil= kn-affil=Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=3 en-affil= kn-affil=Department of Physiology, Kawasaki Medical School affil-num=4 en-affil= kn-affil=Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=5 en-affil= kn-affil=Department of Human Morphology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=6 en-affil= kn-affil=Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences en-keyword=glycocalyx kn-keyword=glycocalyx en-keyword=retina kn-keyword=retina en-keyword=choroid kn-keyword=choroid en-keyword=diabetes kn-keyword=diabetes en-keyword=hypertension kn-keyword=hypertension END start-ver=1.4 cd-journal=joma no-vol=3 cd-vols= no-issue= article-no= start-page=35 end-page=38 dt-received= dt-revised= dt-accepted= dt-pub-year=1950 dt-pub=19500725 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on vitriol springs : 5. Polynuclear complex iron salts in vitriol waters kn-title=綠礬泉に關する研究（第5報）　綠礬泉に含まれる鐵の多核錯鹽 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=AshizawaTakashi en-aut-sei=Ashizawa en-aut-mei=Takashi kn-aut-name=芦澤峻 kn-aut-sei=芦澤 kn-aut-mei=峻 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大學放射能泉研究所 END start-ver=1.4 cd-journal=joma no-vol=13 cd-vols= no-issue= article-no= start-page=15 end-page=17 dt-received= dt-revised= dt-accepted= dt-pub-year=1953 dt-pub=195312 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=STUDIES ON VITRIOL SPRINGS (4) ON THE COPPER, ZINC, NICKEL, AND COBALT CONTENTS OF BLOOD AFTER THE INTERNAL USE OF A VITRIOL WATER kn-title=緑ばん泉に関する研究（4） : 綠ばん泉飲用後血液内微量金属元素の動きについて en-subtitle= kn-subtitle= en-abstract= kn-abstract=Sotozono proved that the administration of daily 20cc of Fujino Mineral Water (an acid vitriol water containing copper, zinc, nickel and cobalt) has a remarkably beneficial effect on several kinds of hypochromic anemia. It contains 9.56gms of iron, 0.007gm of zinc, 0.005gm of copper 0.001gm of nickel, and 0.006gm of cobalt in one liter. 20 - 40cc of Fujino water was diluted 5 - 10 fold with plain water and administered to the fasting patients perorally. Blood samples were taken from cubital vein before, 1, 2, 4, 6, 24, 48, and 72 hours after the intake of the vitriol water. Copper, zinc, nickel and cobalt contents of the blood samples were measured by Ashizawa' s dithizone- chromatographic method. It was shown that copper, nickel, and cobalt contents of blood rose unexpectedly high temporarily, in a manner that did not correspond to their amount in the given mineral water. So that the mobilization of copper, nickel, and cobalt in the body after the intake of the mineral IVrter was susrected. Zinc content of blood showed no constant tendency. en-copyright= kn-copyright= en-aut-name=OshimaYoshio en-aut-sei=Oshima en-aut-mei=Yoshio kn-aut-name=大島良雄 kn-aut-sei=大島 kn-aut-mei=良雄 aut-affil-num=1 ORCID= en-aut-name=AshizawaTakashi en-aut-sei=Ashizawa en-aut-mei=Takashi kn-aut-name=芦沢峻 kn-aut-sei=芦沢 kn-aut-mei=峻 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所 affil-num=2 en-affil= kn-affil=岡山大学温泉研究所 END start-ver=1.4 cd-journal=joma no-vol=14 cd-vols= no-issue= article-no= start-page=22 end-page=29 dt-received= dt-revised= dt-accepted= dt-pub-year=1954 dt-pub=195403 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=ASOZU (WEAK COMMON SALT SPRING), HAMAMURA (SULPHATED BITTER SPRING), KAlKE (CALCIUM CHLORIDE CONTAINING SALINE SPRING) AND FUJINO (ACID ALUM VITRIOL SPRING) SPRING WATERS AND THE ALIMENTARY HYPERGLYCEMIA kn-title=皆生温泉（含塩化土類食塩泉）淺津温泉（弱食塩泉）浜村温泉（含食塩石膏泉）並に藤野鉱泉（酸性明礬綠礬泉）の飲用と食餌性過血糖 en-subtitle= kn-subtitle= en-abstract= kn-abstract=There are many experimental reports and clinical observations about the internal use of thermal waters on carbohydrate metabolism, and alkaline springs, alkaline common salt springs and sulphur springs are used for the balneological therapy of diabetic patients. The author reported that the internal use of the radon springs of Japan, such as Misasa, Ikeda and Masutomi thermal waters promoted the action of insuline and inhibited the experimental hyperglycemia in rabbits, and he suggested that these radioactive waters also would be able to utilize for the diabetic treatment. On the other hand, trace elements such as Cu, Zn and Mn have protective effects against disturbed carbohydrate metabolism of diabetic body. Some thermal waters contain these trace elements in various degrees, and Oshima & Ashizawa observed that after the drinking of Fujino mineral water the iron, copper, nickel and cobalt content in blood rose temporarily. In this report, the author investigated the influence of the drinking of Asozu (weak common salt spring), Hamamura (sulphated bitter spring), Kaike (calcium chloride containing saline spring) and Fujino (acid alum vitriol spring) Spring waters upon the alimentary hyperglycemia in rabbits. Thirty ml. of 10% glucose solution in thermal water (Fujino Water was diluted twice with plain water) or in plain water per kg. of bodyweight was administered to the rabbit by stomach tube and blood sugar level was determined before, 1/2, 1, 2, 3 and 4 hours after the administration. The results were as follows: 1. The drinking of Asozu Spring water inhibited the alimentary hyperglycemia compared with the plain water as a control. 2. Hamamura Spring had a tendency to decrease the blood sugar level. 3. Kaike Spring water had no inhibitory a.ction upon the alimentary hyperglycemia. 4. In spite of the existence of trace elements, Fujino mineral water had no significant effect. The author supposed that this was due to its high acidity. en-copyright= kn-copyright= en-aut-name=MorinagaHiroshi en-aut-sei=Morinaga en-aut-mei=Hiroshi kn-aut-name=森永寛 kn-aut-sei=森永 kn-aut-mei=寛 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所内科 END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue= article-no= start-page=35 end-page=48 dt-received= dt-revised= dt-accepted= dt-pub-year=1956 dt-pub=195601 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=THE CLINICAL STUDIES OF RHEUMATOID ARTHRITIS (I) kn-title=リウマチの臨牀的研究（その1） en-subtitle= kn-subtitle= en-abstract= kn-abstract=The value of spa treatment of rheumatic disease is an established feature of medical management based on experiences for many centuries. The author has been practising the balneotherapy of rheumatic diseases at Misasa Spa for several years, and has found this therapy efficacious in many cases in relieving the anemia that accompanies rheumatoid arthritis. For this reason, the author is investigating the metabolism of iron in rheumatic anemia, which is expected to occur in the course of the spa treatment. In this report, the results of clinical examinations of 24 patients with rheumatoid arthritis, of the type (2. 2. 2.) Polyarthritis systemica chronica (in Prof. Kodama's classification of arthritis), are described. I. Some observations of anemia in rheumatoid arthritis 1. The peripheral blood The number of erythrocytes is 266×10(4)～455×10(4)/c. mm. (average: (381±32)×10(4)/c. mm.), Hb-content : 55～90% (average : 76±5.8%), and the color index is about 1.0. The anemia of rheumatic disease treated is mostly normochromic. The white blood count is between 3240 and 13300/c. mm. (average: 6421±955/c. mm. ), and the number of the leucocytes in 80% of the cases ranges within the normal limits. Eosinophilia is observed in 15% of the cases. 2. Anemia-producing substance in the serum of rheumatoid arthritis When serum from rheumatoid arthritis patients was injected into rabbits, the number of erythrocytes and the hemoglobin -content of the rabbits was found to decrease markedly for 2～6hours after the injection. But no such effect was observed when the serum of healthy subjects was injected. From this, the author presumes the presence of an anemia-producing substance in the serum of rheumatoid arthritis. The nature of this substance in now under investigation. II. Clinical-biochemical studies 3. Gastric acidity of rheumatic patients Of 7 cases examined, anacidity of gastric juice was observed in 2 cases, subacidity in other 2 cases and normacidity in the remaining 3 cases. Thus, a decrease in the gastric acidity was found to occur in 57% of the cases. 4. Takata-serum-test and sedimentation rate It is said that the sedimentation rate and the Weltmann-reaction are very sensitive indicators of the extent of the activity of rheumatic disease. The Takata-serum-test was applied in 18 cases and was found to give positive results in 10 cases (55%). The sedimentation rate was found to increase in 17 of 20 cases (85%). 5. Blood uric acid As is well known, the concentration of uric acid is abnormally high in the blood of patients with gout; while, according to the literature, the blood uric acid levels of patients with rheumatoid arthritis range within the normal limits. The author, using the method of Benedict, obtained the following results for blood uric acid in 14 normal subjects in fasting state: Range - 2.30～3.47mg./dl. , 5% rejection limit -- 1.97～3.68mg./dl. In 5 of 7 cases of rheumatoid arthritis, the blood uric acid levels were shown to be above the upper limit of the normal range, but the concentrations of blood uric acid of non-rheumatic joint diseases and neuralgias were mostly within the normal range. 6. Blood sugar The fasting blood sugar levels of rheumatoid patients ranged from 82 to 1l0mg./dl. (average : 100mg./dl.), higher than the levels of healthy subjects (78～108mg./dl., average : 90mg./dl.). The intravenously injected glucose load test was applied to 8 rheumatoid patients. A solution of 40 ml. of 20% glucose was injected into a fasting subject for 2 minutes. Blood samples were taken before the injection, 3 minutes after the injection, and at each subsequent 10 minute-interval for 70 minutes. The glucose tolerance curves in 5 of these cases were found to be out of the normal range. It is to be noticed that the average blood sugar for rheumatoid arthritis is similar to the curve for liver disease. 7. Serum alkaline phosphatase activity and serum phosphorus The method of Taussky-Shorr was used for the determination of the level of alkaline phosphatase activity and inorganic phosphate in the serum. The alkaline phosphatase activity of 11 normal individuals ranged from 1.4 to 6.4 Shinowara-Jones-Rheinhart units/dl. (5% rejection limit), while in 4 of 8 cases of rheumatoid arthritis, it was of abnormally high levels. The concentration of inorganic phosphate in the serum of 12 normal subjects ranged from 2.9 to 5.0mg. /dl. (5% rejection limit), while in 3 cases of rheumatoid patients, it showed higher levels than normal. 8. Total cholesterol in serum The total cholesterol in the serum of fasting normal individuals was measured by Bloor's method, and the concentration was found to range from 124 to 188mg./dl. (rejection limit of 5% level of significance), and the total cholesterol in the serum of rheumatoid arthritis to be abnormally high in concentration in 6 of 7 cases. The liver function was evaluated by the Takata-serum-test, the test of fasting blood sugar levels, the glucose load test, and the test of serum alkaline phosphatase activity; and from this the hepatic dysfunction was found to occur in rheumatoid arthritis patients in about 50% of the cases examined. Disturbances in the protein, fat, and carbohydrate metabolism were also found to occur. The above-mentioned findings indicate that rheumatoid arthritis is not only a disease of the joints, but also a general and systemic illness. Attention must accordingly be given to the general condition of the patient in the treatment of rheumatic disease. en-copyright= kn-copyright= en-aut-name=MorinagaHiroshi en-aut-sei=Morinaga en-aut-mei=Hiroshi kn-aut-name=森永寛 kn-aut-sei=森永 kn-aut-mei=寛 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所内科 END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue= article-no= start-page=1 end-page=7 dt-received= dt-revised= dt-accepted= dt-pub-year=1956 dt-pub=195603 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=o-PHENANTHROLINE METHOD APPLIED TO THE DETERMINATION OF IRON IN NATURAL WATERS kn-title=o-Phenanthrolineによる天然水中の鉄の定量法について en-subtitle= kn-subtitle= en-abstract= kn-abstract=The o-phenanthroline method was tested as to its applicability to the separate determination of iron in natural water: ionic ferrous iron, reducible iron, snd colloidally dispersed iron. In connection with this, the results of the following experiments are given in this paper. 1. Determination of the absorption curve of o-phenanthroline ferrous complex. (Figure 1.) 2. Construction of the calibration curve for a Purfrich's photometer with filter S 50, 15 cm cuvettes. (Figure 2.) 3. Examination of the effects of coexisting anions on the determination of iron by the method of three way layout. (Table 1., Table 2.) 4. Trial determinations of iron in three different states in solution. (Table 3., Table 4. ) 5. Test of the applicability of this method to the determination of ionic ferrous iron and reducible iron in thermal water. (Table 5., Table 6.) From the above, it was revealed that ionic ferrous iron and reducible iron in natural water are separately determinable with sufficient accuracy by the o-phenanthroline method, and that ionic iron and colloidally dispersed iron are also separately determinable, when the dispersed iron is present in amount more than 1.3% of the total iron. en-copyright= kn-copyright= en-aut-name=TanakaShigeo en-aut-sei=Tanaka en-aut-mei=Shigeo kn-aut-name=田中重男 kn-aut-sei=田中 kn-aut-mei=重男 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所化学部 END start-ver=1.4 cd-journal=joma no-vol=19 cd-vols= no-issue= article-no= start-page=34 end-page=51 dt-received= dt-revised= dt-accepted= dt-pub-year=1957 dt-pub=195709 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=On the Granitic Rocks from the District of San-in (Part I) kn-title=花崗岩に関する諸問題　（8）　山陰地方産花崗岩質岩石について（第1報） en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, the petrology of the granitic rocks from the district of San-in, especially from the province of Izumo, is described with some references on the mineral resources associated in these rocks. The granitic ro:ks of which the Chugoku-Mountainland in the Izumo province is mainly composed may be classified mineralogically and chemically into next seven kinds. Their names and the respective average silica contents are as follows: (1) Hornblende-biotite granodiorite·········SiO(2) 66.18% (2) Hornblende-biotite granite········· SiO(2) 69.28% (3) Biotite granite·········SiO(2) 74.91% (4) Fine-grained biotite granite and biotite granite porphyry·········SiO(2) 73.47% (5) Aplite ·········SiO(2) 75.96% (6) Gabbro and diorite·········SiO(2) 56.05% (7) Quartz porphyry· ·SiO(2) 73.79% Among the various mineral resources found in the granitic rocks in this region, the iron sand and the molybdenum ore seem to have more ecconomical value and are indeed wrought respectively in several localities in farely large scale. The iron sand is collected either from the decomposition product of the hornblendebiotite granite (2) and from that of the diorite (6). The former, so-called "Masa", is superior in quality for the production of steel, but it is inferior in its quantity. On the other hand, the latter, so-called "Akome", can be gathered in quantity in larger amount than the former, but it is inferior to the former in quality. For this reason, both sorts of sand are in practice mixed in some definite amounts. The ore deposits of molybdenite contained in the quartz vein traversing the granitic rocks are found in several localities and some of them are wrought. In such cases the parent rock of the ore seems to be invariably confined to the rock type of the fine-grained biotite granite or of the aplite. Besides the rocks stated above, some descriptions are given to the rocks, such as quartz porphyry and basalt, which are found in several places in the granite region. However they seem to have no genetic relation with the underlying granites. en-copyright= kn-copyright= en-aut-name=YamaguchiKenji en-aut-sei=Yamaguchi en-aut-mei=Kenji kn-aut-name=山口鎌次 kn-aut-sei=山口 kn-aut-mei=鎌次 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=島根大学文理学部地学教室 END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue= article-no= start-page=48 end-page=54 dt-received= dt-revised= dt-accepted= dt-pub-year=1958 dt-pub=195801 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=THE CHANGE IN CONCENTRATION OF FERROUS IRON AND REDUCIBLE IRON, DISSOLVED IN SPRING WATER AT MISASA HOT SPRINGS, JAPAN, DURING PRESERVATION OF THE WATER SAMPLE IN A SEALED BOTTLE kn-title=鳥取県三朝温泉の温泉水中の二価鉄及び可還元鉄の密栓放置による濃度変化について en-subtitle= kn-subtitle= en-abstract= kn-abstract=The two sprigns called "Tanaka-no-Yu" and "Hisui-no-Yu" at Misasa Hot Springs, japan (Fig. 1), suitable for sampling the unpolluted water, the locations of which, are shown in Fig. 2, were chosen for this study. The o-phenanthroline method, details of which were discussed in the previous report by the author (Repts. Balneol. Lab. Okyama Univ., 17, 1, (1956)) was used for the determination of ferrous iron, ferrous iron + reducible iron, and ferrous iron + reducible iron + colloidally dispersed iron (to be referred to as "total irons" in this report). For comparison, the change in concentratin of iron dissolved in distilled water during preservation in a sealed bottle was observed, and the results obtained for the solutions with the pH values of 5.4 and 5.8 are illustrated in Fig.3 and Fig.5, rspectively. Both ferrous and reducible iron disappear within 5 minutes, when the pH of the solution is 6.4. The hydrogen ion concentration was thus seen to give a sensitive effects on the speed of diminution of ferrous and reducible iron dissolved in the distilled water. It should be noticed that no appreciable diminution was observed during the period from 60 min. to 120 min,. It is probable that the diminution of total iron is caused by the adsorption of colloidal iron hydroxides on the wall of glass bottle. The effects of charged anion (SO(4)(--)) on the change in concentration of iron during preservation was also investigated, but no appreciable effect was found. (Fig. 5 and Fig. 6). Fig.7, Fig.8, and Fig.9 show the change in concentration of iron during preservation of the spring water at "Tanaka-no-Yu". The content of iron in the spring water is about 0.3 mg/l, and its pH value is about 7.1. For the first 30 minutes, ferrous iron diminishes rapidly, the slope of the diminution curve being sharp and almost straight. Thereafter the slope becomes gentler, and, after an hour, the slope approaches nearly zero. On the other hand, ferrous iron dissolved in distilled water disappears in a moment at the same pH 7.1. Fig.10, Fig.11, and Fig.12 show the change in concentration of iron during preservation of the spring water at "Hisui-no-Yu". The content of iron in the spring water is about 1.0 mg/l, and its pH value is about 6.4. In this case, the diminution of ferrous iron is not remarkable, and only 20% of the initial quantity diminishes within 2 days. Whereas, in the case of distilled water, the diminution is very rapid at the same pH 6,4, and the ferrous iron disappears completely within 5 minutes. In Fig.13 the speed of diminution of iron in distilled water and that in spring water are compared. The difference here seen may probably be due either to that the ferrous iron in spring water is in a certain complex form not easily oxidizable, or to that the spring water contains some reducing substances. en-copyright= kn-copyright= en-aut-name=TanakaShigeo en-aut-sei=Tanaka en-aut-mei=Shigeo kn-aut-name=田中重男 kn-aut-sei=田中 kn-aut-mei=重男 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所化学部 END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue= article-no= start-page=1 end-page=46 dt-received= dt-revised= dt-accepted= dt-pub-year=1958 dt-pub=195804 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Balneotherapy of Gynecological Chronic Inflammations kn-title=婦人科慢性炎症の温泉療法に関する研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The effects of balneotherapy on gynecological chronic inflammations were examined both clinically and experimentally. Clinical study. Statistical observations were made on the patients with gynecological diseases who visited the spa of Misasa. It was ascertained that, among them, the patients with gynecological chronic inflammati on whose chief complains were hypogastric and Lumbar pains were most common and that, by balneotherapy, their conditions were frequently improved both subjectively and objectively. Experimental study. An experimental foreign body inflammation was evoked by inserting a Sponge into the abdominal cavity of an adult female rat and the effects of hot-spring bath were examined. Acceleration of the absorption of the inflammation, enhancement of phagocytosis of the subcutaneous histiocytes, activation of the fibrohistiocytic system of the subcutaneous connective tissue, and acceleration of return of the free cells in the abdominal cavity were proved. Furthermore, comparative studies were made on the effects of various artificial mineral waters and ultra short waves. It was found that, though they were less effective than natural mineral water, artificial strong saline water, artificial sulfur water, artificial sulfate water, artificial iron water and ultra short waves were effective and that artificial weak saline water, artificial bicarbonate water, artificial humimic acid water, artificial alkaline water, and artificial acidic water were as effective as fresh water. Compared with hot bath, insensible bath was more effective. No significant difference of therapeutic effect was found by bathing once a day or three times a day. In short, balneotherapy had a facilitatory action on the absorption of the inflammatory changes in the abdominal cavity. This should be ascribed not only to the increase in the deep blood flow by warming but also to the general defence mechanism enhanced by cutaneous stimulation. Some differences were also assumed depending on the ions contained in the mineral waters. en-copyright= kn-copyright= en-aut-name=IshiiChikara en-aut-sei=Ishii en-aut-mei=Chikara kn-aut-name=石井氻 kn-aut-sei=石井 kn-aut-mei=氻 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部産婦人科教室 END start-ver=1.4 cd-journal=joma no-vol=22 cd-vols= no-issue= article-no= start-page=37 end-page=54 dt-received= dt-revised= dt-accepted= dt-pub-year=1958 dt-pub=195807 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on Paper-Analysis in the Field of Balneology (I) Studies on Iron in Serum by Means of Parper-Electrophoresis and Paper-Chromatography kn-title=温泉医学領域に於ける濾紙分析法の研究　（1） 濾紙電気泳動法並びに濾紙chromatographyによる血清鉄の研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=1. The author showed by means of paper-electrophoresis using o-nitrosoresorcinmonomethylether (hereafter N. R. M. E.), a colourdeveloping reagent, that iron in serum combines with β-fraction of serum protein. 2. The author proposed a new method for the determination of serum iron by means of paper-chromatography. Procedure is as follows. In a centriguged tube, 0.5 ml. of clear serum is taken, acidified with 0.15 ml. of 20% HNO(3), and allowed to stand for 20 minutes. After addition of 0.2 ml. of saturated solution of CH(3)COONa and 1 ml. of acetic acid-sodium acetate buffer solution (pH: 3.8), the mixture is kept for at least 10 min. and filtered through Toyo-filter-paper No.5 A. The clear filtrate is taken in a stoppered test tube (the inside diameter: 1.2 cm.; height: 15 cm.). To this filtrate are added 0.2 ml. of 20% Hydroxylamine hydrochloride and 0.25 ml. of saturated aqueous solution of N. R. M. E. After being allowed to stand for at least 20 min., the mixture is shaken with 5 ml. of carbon tebrachloride. Then the excess of N. R. M. E. is removed. The supernatant aqueous solution (0.2 ml.) is used for a determination sample. The sample is placed on the paper (Toyo,filter-paper No.51 or 50) in a thin line at a distance of 10 cm. from the edge, and the spots are developed with 90 % ethylalcohol. After development for 4-6 hours, a green-coloured linear spot appsars at a distance of 12-16 cm. from the origin-point. Spot intensity at 670 mμ is measured with Natsume's densitometer, and from this, concentration of Fe can be estimat.ed on the standard graph (Fig. 5). 3, Effects of radioactive thermal spring bathing and internal use of vitriol water upon serum iron levels were studied with the result.s as follows. The above-mentioned author's method of determining the iron level in a small amount of serum is very convenient in investigating iron metabolism in the field of balneotherapy. The author examined changes of iron levels in serum after radioactive thermal bathing as well as after internal use of acid vitriol water. a) The iron levels in serum were maasurecl by the author's method before and 5, 30 and 60 minutes after the radioactive thermal bath (Rn-content: 10-30 Mache, 42-3°C., for 10 min,). The iron levels in the serum of healthy subjects showed no significant change after the thermal bathing. b) Yanahara Mineral Water (an acid vitriol water, pH; 2.2) contains 0.045 gm. of Cl(-), 12.35 gm. of SO(4)(--), 2.5 gm. of Fe(++)+Fe(+++), 0.0938 gm. of Al(+++) and 0.0001 gm. of Cobalt in one liter. i) Thirty ml. of Yanahara, water diluted with plain water to 200 ml. (Fe(++) content: ca. 75 mg.) and administered to health fasting subjects orally. As a control matter, 0.65 gm. of Glukon-F powder (Fe(++) content.: ca. 75 mg.) was then given. Blood samples were taken from the cubital vein before and 1, 3 and 6 hours after the intake of the dtriol water. Iron contents of the serum samples were measured by the author's paper chromatographic method. The results were shown in the table and the figure. The iron contents of the serum after the intake of the mineral water were higher than in the case of the control. ii) Two ml. of Yanahara vitriol water was administered to rabbits with the aid of a stomach tube, and serum iron levels wera determined before and 1, 3, 4 and 6 hours after the administration. An amount of 0.05 gm. of Glukon-F powder was dissolved in 5 ml. of plain water, and this solution was given to rabbits as a control. After the internal use of vitriol water, iron levels in serum rose and remained unexpactedly high for about 1-4 hours, in a manner that did not. correspond to the amount of iron in the given mineral water. So that it was suspected that the iron originally contained in the living subjects had been mobilized by the intake of vitriol water. Iron levels in serum after administration of a solution of Glukon-F powder were lower than in the case of the mineral water. en-copyright= kn-copyright= en-aut-name=IshibashiMaruo en-aut-sei=Ishibashi en-aut-mei=Maruo kn-aut-name=石橋丸応 kn-aut-sei=石橋 kn-aut-mei=丸応 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所 END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue= article-no= start-page=53 end-page=69 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=195905 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Clinical Studies on Anemia in Rheumatoid Arthritis kn-title=関節リウマチの貧血に関する臨牀的研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Anemia of moderate severity is commonly present in patients suffering from rheumatoid arthritis, but one to which little attention has been paid and despite its frequency the exact mechanism of its production is uncertain. Anemia in rheumatoid arthritis is refractory to anti-anemic therapy. The presence of anemia may hinder adequate physical or orthopedic treatment and may produce a degree of lassitude that considerably aggravates the joint disability. This anemia, therefore, seemed worthy of study and investigations of three aspects are reported here: 1. Changes in peripheral blood, bone marrow, liver function and gastric acidity. 2. Alternations in iron metabolism. 3. Balneotherapy and anemia in rheumatoid arthritis. I. Peripheral Blood Picture, Liver Function, Serum Protein Fraction and Gastric Acidity. 1. The peripheral blood and bone marrow. The number of erythrocytes is 558～216×10(4)/c. mm. (average:402×10(4)/c. mm.), hemoglobin-content:110～40% (average: 78.6%), and the color index is about 1.0. The anemia of rheumatoid arthritis treated is mostly normochromic. The white blood cell count is between 11200 and 3720/c. mm. (average: 7504/c. mm.), and the number of leucocytes in 80% of the cases ranges within the normal limits. Eosinophilia is observed 27% of the cases. Films of the sternal marrow showed no major abnormality in the eight cases examined. Several minor points, however, deserve mention. The nucleated cell count was diminished in seven cases examined, and the decrease of normoblasts in bone marrow would explain the reduced red cell count in peripheral blood. The myeloid series showed a relative increase. 2. Liver function tests and gastric acidity. To illustrate the possible appearance of liver function disturbances in connection with rheumatoid arthritis, the author has made different liver function tests on patients suffering from this disease. From the results it appears that in protein metabolism tests more than 83% of the cases gave abnormal albumin/globulin ratios and Takata's and erthrocyte sedimentation reactions. The detoxication capacity determined by hippuric acid synthesis tests had decreased in 25% of the cases examined. The dye excreting capacity, determined by the bromsulfalein tolerance test, was found to be reduced in 64% of the cases examined. The urin-urobilinogen test showed positive in 28% of the cases. In all cases the insulin sensitivity test gave pathological readings. Of 40 cases examined, anacidity of gastric juice was observed in 17 cases, subacidity in other 10 cases and normacidity, hyperacidity in remammg 13 cases. Thus, a decrease in the gastric acidity was found to occur in 67.5% of the cases. 3. Serum protein fraction. The total serum protein of 31 cases with rheumatoid arthritis appeared to be on the same level as in normal material. Serum protein fraction was determined in 19 cases by paperelectrophoresis. In rheumatoid patients, albumin fraction of serum protein decreased and γ-globulin fraction increased in all cases examined, compared with the data of normal subject as a control. Alubumin/globulin ratio of rheumatoid arthritis was below the 5% rejection limit of normal value. en-copyright= kn-copyright= en-aut-name=YamamotoYasuhisa en-aut-sei=Yamamoto en-aut-mei=Yasuhisa kn-aut-name=山本泰久 kn-aut-sei=山本 kn-aut-mei=泰久 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所内科 END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue= article-no= start-page=13 end-page=24 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=195905 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Chemical Composition and Levels of Ground Water at Misasa Hot Springs kn-title=三朝温泉地における水質および水位に関する研究 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The water levels of the thermal springs and the ground water levels were measured and the contour of the water table was obtained. The contour was disturbed at two regions in which many springs issue. The thermal and ground waters were sampled all over the springs district, and the water temperatures were measured when they were sampled. The chloride, bicarbonate, sulfate, calcium and magnesium content was also determined. In addition, the analytical methods for the determination of arsenic, phosphorus and acid-soluble iron were improved. Also the concentration of these elements was determined. Based on the results of the observations and chemical analysis, the relations between the water temperatures and content of chemical constituent and the chloride content were checked respectively. Positive correlations were found in the relations between water temperature～Cl(-), HCO(3)(-)～Cl(-), SO(4)(2-)～Cl(-), Ca(2+)～Cl(-), and As～Cl(-). Furthermore, the regional differences were detectable in the ratios of water temperature to chloride content and of bicarbonate to chloride content, nevertheless the correlation as a whole were valid. The diversity and regional differences of the chemical composition of the waters were explained as due to the differences in the mixing proportion of the magmatic thermal water and the varying kinds of ground water at the deep site in the ground and at the site near the ground surfaces. en-copyright= kn-copyright= en-aut-name=SakanoueMasanobu en-aut-sei=Sakanoue en-aut-mei=Masanobu kn-aut-name=坂上正信 kn-aut-sei=坂上 kn-aut-mei=正信 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所 END start-ver=1.4 cd-journal=joma no-vol=26 cd-vols= no-issue= article-no= start-page=50 end-page=63 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=195910 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Clinical Studies on Anemia in Rheumatoid Arthritis (III) kn-title=関節リウマチの貧血に関する臨牀的研究 第3報： 関節リウマチ貧血に及ぼす温泉治療，各種貧血治療剤の影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract=III. The Effects of Balneotherapy and Antianemics on Anemia in Rheumatoid Arthritis 1. Balneotherapy: The author investigated the changes of the peripheral blood picture, erythrocyte sedimentation rate, numbers of finger-ring (Wheatsheaf's ring-test) and grasping power (by means of hand-dynamometer or sphygmometer) before and after baneotherapy. The regimen of spa treatment in our hospital includes bathing in radioactive hot spring (42-3°C. in temperature)two or three times a day, local mud bath or mud pack (once or twice a day, massage and drinking of spring water. These measures performed for one or two months. When the spa treatment has finished the erythrocyte count and Hb-content of rheumatoid patients increased in 61% of 33 cases examined comparing with before treatment, leucocyte count tended to shift to normal and E.S.R. decreased in 58% of the cases. The swelling of the finger joints diminished. 2. Oral iron therapy: In previous report, the author verified that there exist simple iron deficiency anemia in some cases of rheumatoid arthritis. Oral iron therapy responded well in such cases, but the majority of cases were resistant to oral iron. 3. Transfusion of blood in rheumatoid anemia: The author transfused 100 ml. of blood once a day for 5-10 days in 11 rheumatoid anemic patients. By the treatment of transfusion, the findings in peripheral blood improved and E.S.R. decreased. en-copyright= kn-copyright= en-aut-name=YamamotoYasuhisa en-aut-sei=Yamamoto en-aut-mei=Yasuhisa kn-aut-name=山本泰久 kn-aut-sei=山本 kn-aut-mei=泰久 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所内科 END start-ver=1.4 cd-journal=joma no-vol=26 cd-vols= no-issue= article-no= start-page=31 end-page=49 dt-received= dt-revised= dt-accepted= dt-pub-year=1959 dt-pub=195910 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Clinical Studies on Anemia in Rheumatoid Arthritis (II) kn-title=関節リウマチの貧血に関する臨牀的研究 第2報： 関節リウマチ患者の血清鉄量の消長について. 付血清銅量 en-subtitle= kn-subtitle= en-abstract= kn-abstract=II. Iron Metabolism 1. The serum iron: The serum iron was estimated by the method of Umemoto and Yamamoto (by means of o-nitroso resorcinmonomethylether) The average serum iron level of 33 cases with rheumatoid arthritis was 47γ/100 ml., and in 27 of 33 cases (82%) the serum iron levels were shown to be below　the lower limit of the normal range (5% rejection limit: 54-141γ/100 ml. ), but the concentrations of serum iron of neuralgias (degenerative Spondylosis, sciatica and painful shoulder) were mostly within the normal range. 2. Iron absorption: To investigate the possible role of poor absorption in preventing a response to oral iron therapy, the changes in serum iron were followed after a test of iron by mouth in 16 caseS with rheumatoid arthritis. The test dose was 1 gm. of reduced iron given with 30 mI. of lemonade-pepsin solution to preserve the iron in the ferrous state and obviate the effects of possible achlorhydria in rheumatoid patients. The results may be grouped under three headings: a) Large rise in serum iron: good adsorption. Three caseS (19%) showed a very large rise in serum iron after the test dose, which is similar to simple iron-deficiency anemia. b) Slight rise in serum iron: presumed poor absorption. Six cases (38%) showed a very small or negligible rise after the test dose, so that at its peak the serum iron was below the normal range. c) In the remaining 7 cases, a maximal rise in serum iron after the test dose was within the normal range. 3. The iron-binding capacity of the serum: The iron-binding capacity of the serum was estimated by means of intravenous injection of Gluferricon (Fe content: 10 mg.). The mean total iron-binding capacity of the serum in the present 13 cases with rheumatoid arthritis was 273γ/100ml., virtually the same as the normal figure (287γ /100 ml.). The degree of saturation of the iron-binding protein with iron was found to lie between 18 and 45% (average: 34%) in control sUbjects and between 7 and 24% (average: 16%) in rheumatoid patients. 4. The serum copper: The serum copper was estimated by means of diethyldithiocarbamate in rheumatoid arthritis with the following results. Healthy subjects: men (15 cases): mean 89.9±14.8γ /l00 ml., women (15 cases): mean 99.9± 12.6γ/100 ml. There is no significant difference between the two. In 10 of 17 cases (57%) with rheumatoid arthritis, the serum copper levels were shown to be above the upper limit of the normal range (57-138γ/100 ml. ・・・5% rejection limit), neuralgias were mostly (92%) within the normal range. The results of investigations upon alternations in iron metabolism of rheumatoid anemia are reported. 1. The serum iron concentration was usually reduced. 2. The intestinal absorption of iron after a single dose of 1 gm. of reduced iron was variable. Strong presumptive evidence of impaired absorption waS recognised in many cases, but some cases gave the excellent absorption. From these results, it seems that simple iron deficiency exist in some anemic caseS of rheumatoid arthritis. 3. The total iron-binding capacity of the serum was slightly reduced. 4. The degree of Saturation of iron-binding protein with iron was below nornal. 5. The serum copper concentration waS usually elevated. en-copyright= kn-copyright= en-aut-name=YamamotoYasuhisa en-aut-sei=Yamamoto en-aut-mei=Yasuhisa kn-aut-name=山本泰久 kn-aut-sei=山本 kn-aut-mei=泰久 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所内科 END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue= article-no= start-page=61 end-page=75 dt-received= dt-revised= dt-accepted= dt-pub-year=1970 dt-pub=19700330 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=The effect of radioaclive thermal bathing upon serum iron values kn-title=温泉入浴の血清鉄値に及ぼす影響について en-subtitle= kn-subtitle= en-abstract= kn-abstract=The author investigated the effect of radioactive hot spring bathing on serum iron values. The serum iron values were measured by Umemoto-Yamamoto's method using o-nitrosoresorcin monomethylether, as a colour-developing reagent. The chemical compositions of the spring water used is as following: pH : 7.04, Rn : 38-151x10(-10)curies/l, K(+) : 14.0, Na(+) : 540.2, Ca(++) : 61. 2, Mg(++) : 6.6, Fe(++) : 89.0, AI(+++) : 0.1, Cl(-) : 709.5, S0(4)(--) : 179.5, HCO(3)(-) : 226.7, H(2)SiO(3) : 89.0, HBO(2) : +, CO(2) : 29.5, totaling 1,827mg/kg. 1) Single bathing: The iron values in the serum were measured before and after 0, 1/2, 1 and 2 hours after the radioactive thermal bathing for 10 minutes in water of 41 ±2℃ in temperature. Single thermal bathing showed no significant effect on the serum iron values in healthy hnman subjects, but the serum iron concent:'ations in healthy white rabbits tended to decrease following single thermal bathing and to remain at a decreased level for 1/2 to 1 hour, and returned to normally within 2 hours from the time of the bathing (Table 1, 2 and Fig. 1, 2). 2) A series of baths: The author examined the serum iron values of patients with rheumatic disorders before and 3rd, 7th, 14th, 21st and 28th days after in the course of "a series of baths" in radioactive hot spring. Patients bathed in water of 41 ± 2℃ in　temperature, for 5-10 minutes, 2 or 3 times daily. A　fall in the serum iron values was seen on the 3rd to 7th days. At that time the pattern of iron absorption from intestine showed a iron dificiency anemia type. The rate of absorption of iron was rapid. At about the 14th day, the serum iron values of patients tended to increase but unbound iron-binding capacity of the serum decreased. Subsequently, the serum iron values returned to the initial levels between the 21st and 28th day (Table 3, 4, 5, and Fig. 3, 4, 5), 3) It is said that the reticulo-endothelial system plays an inportant part in iron metabolism. The author injected 5 ml of Indian ink into the aural vein of rabbits for the purpose of blocking the reticulo-endothelial system. These procedures were carried out once a day for 7 successive days. The rabbits with "a blockade of R. E. S." had no significant change in the serum iron values during a series of baths. From what has been stated in the above, it may be said that bathing in radioactive hot springs regubtes the iron metabolism of patients with anemia and brings about the acceleration of the medullary function. en-copyright= kn-copyright= en-aut-name=YamamotoYasuhisa en-aut-sei=Yamamoto en-aut-mei=Yasuhisa kn-aut-name=山本泰久 kn-aut-sei=山本 kn-aut-mei=泰久 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学温泉研究所温泉医学部門 END start-ver=1.4 cd-journal=joma no-vol=137 cd-vols= no-issue=11 article-no= start-page=3642 end-page=3647 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19903 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effects of heat-treatments on electrical properties of boron-doped silicon crystals en-subtitle= kn-subtitle= en-abstract= kn-abstract=

The effects of heat-treatments around 1000°Ｃand subsequent annealing on the electrical properties of boron-doped silicon have been studied by electrical conductivity, Hall effect, and deep-level transient spectroscopy measurements. The high-temperature heat-treatments always induced net densities of donors. Four recovery stages, stages I-IV, of heat-treatment- induced donors were observed on isochronal annealing up to 400°Ｃ Conductivity changes in these stages can be explained as described below by the reactions of interstitial iron (Fei), its pair (Fe1Bs)with substitutional boron (Bs), and two unknown donors (D1, D2). That is, stage I (25°-100°Ｃ): D1→sink and Fei + Bs→FeiBs, stage II (100°-150°Ｃ)： FeiBs→Fei + Bs, stage III (200°-250°Ｃ):D2→sink, stage IV (250°-350°Ｃ)Fei→precipitation. Heat-treatments in an oxygen atmosphere greatly reduced the introduction of Fei and FeiBs in comparison with an argon atmosphere and mainly introduced D1 and D2 donors. The density of D2 was dependent on the heat-treatment temperature, while that of D1 showed almost no dependence. In stage I, D, was annihilated by first-order kinetics with an activation energy of 0.8 eV. It was indicated that DI and D2 have no relations to iron, copper, oxygen, nor carbon. Though their origins are still unidentified, there may be some interstitial impurities. In stage IV, Fei is suggested to precipitate at oxygen precipitates and dislocation loops formed by high-temperature heat-treatments. As to the application to iron gettering in the device fabrication process, it is proposed that annealing around 300°Ｃ is most suitable as the final heat-treatment step to remove iron and related defects from active regions of devices. Silicon wafers receive complex heat-treatments at various.

en-copyright= kn-copyright= en-aut-name=KamiuraY. en-aut-sei=Kamiura en-aut-mei=Y. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=HashimotoF. en-aut-sei=Hashimoto en-aut-mei=F. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=YonetaM. en-aut-sei=Yoneta en-aut-mei=M. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University en-keyword=silicon kn-keyword=silicon en-keyword=crystals kn-keyword=crystals en-keyword=doping kn-keyword=doping en-keyword=boron kn-keyword=boron en-keyword=heat treatment kn-keyword=heat treatment en-keyword=annealing kn-keyword=annealing en-keyword=electrical conductivity measurement kn-keyword=electrical conductivity measurement END start-ver=1.4 cd-journal=joma no-vol=147 cd-vols= no-issue=7 article-no= start-page=2611 end-page=2613 dt-received= dt-revised= dt-accepted= dt-pub-year=2000 dt-pub=200007 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Electrodeposition of Zinc-SiO2 composite en-subtitle= kn-subtitle= en-abstract= kn-abstract=

The incorporation mechanism of SiO2 particles into zinc electrodeposit is discussed. The SiO2 particles precipitate in two ways on the (00-1)(eta) of zinc electrodeposit: by lined up particles along the laterally growing macrosteps on the (00.1)(eta) and by randomly dispersed particles on the (00.1)(eta). These particles incorporate into the electrodeposits by following two processes. The sidewalls of particles are incorporated into the macrosteps at the edge of (00.1)(eta). The bottom of randomly dispersed particles are incorporated into the (00.1)(eta) probably by the atomic steps. (C) 2000 The Electrochemical Society.

en-copyright= kn-copyright= en-aut-name=KondoKazuo en-aut-sei=Kondo en-aut-mei=Kazuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OhgishiAtsufumi en-aut-sei=Ohgishi en-aut-mei=Atsufumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TanakaZennosuke en-aut-sei=Tanaka en-aut-mei=Zennosuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University en-keyword=atomic-force microscopy kn-keyword=atomic-force microscopy en-keyword=iron binary alloy kn-keyword=iron binary alloy en-keyword=zinc kn-keyword=zinc en-keyword=morphology microstructure kn-keyword=morphology microstructure END start-ver=1.4 cd-journal=joma no-vol=188 cd-vols= no-issue=24 article-no= start-page=8376 end-page=8384 dt-received= dt-revised= dt-accepted= dt-pub-year=2006 dt-pub=200612 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A homologue of the 3-oxoacyl-(acyl carrier protein) synthase III gene located in the glycosylation island of Pseudomonas syringae pv. tabaci regulates virulence factors via N-acyl homoserine lactone and fatty acid synthesis en-subtitle= kn-subtitle= en-abstract= kn-abstract=Pseudomonas syringae pv. tabaci 6605 possesses a genetic region involved in flagellin glycosylation. This region is composed of three open reading frames: orf1, orf2, and orf3. Our previous study revealed that orf1 and orf2 encode glycosyltransferases; on the other hand, orf3 has no role in posttranslational modification of flagellin. Although the function of Orf3 remained unclear, an orf3 deletion mutant (Delta orf3 mutant) had reduced virulence on tobacco plants. Orf3 shows significant homology to a 3-oxoacyl-(acyl carrier protein) synthase III in the fatty acid elongation cycle. The Delta orf3 mutant had a significantly reduced ability to form acyl homoserine lactones (AHLs), which are quorum-sensing molecules, suggesting that Orf3 is required for AHL synthesis. In comparison with the wild-type strain, swarming motility, biosurfactant production, and tolerance to H2O2 and antibiotics were enhanced in the Delta orf3 mutant. A scanning electron micrograph of inoculated bacteria on the tobacco leaf surface revealed that there is little extracellular polymeric substance matrix surrounding the cells in the Delta orf3 mutant. The phenotypes of the Delta orf3 mutant and an AHL synthesis (Delta psyI) mutant were similar, although the mutant-specific characteristics were more extreme in the Delta orf3 mutant. The swarming motility of the Delta orf3 mutant was greater than that of the Delta psyI mutant. This was attributed to the synergistic effects of the overproduction of biosurfactants and/or alternative fatty acid metabolism in the Delta orf3 mutant. Furthermore, the amounts of iron and biosurfactant seem to be involved in biofilm development under quorum-sensing regulation in P. syringae pv. tabaci 6605. en-copyright= kn-copyright= en-aut-name=TaguchiFumiko en-aut-sei=Taguchi en-aut-mei=Fumiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OgawaYujiro en-aut-sei=Ogawa en-aut-mei=Yujiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TakeuchiKasumi en-aut-sei=Takeuchi en-aut-mei=Kasumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SuzukiTomoko en-aut-sei=Suzuki en-aut-mei=Tomoko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=ToyodaKazuhiro en-aut-sei=Toyoda en-aut-mei=Kazuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=ShiraishiTomonori en-aut-sei=Shiraishi en-aut-mei=Tomonori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=IchinoseYuki en-aut-sei=Ichinose en-aut-mei=Yuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=5 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=6 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=7 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University en-keyword=TO-CELL SIGNALS kn-keyword=TO-CELL SIGNALS en-keyword=AERUGINOSA kn-keyword=AERUGINOSA en-keyword=FLAGELLIN kn-keyword=FLAGELLIN en-keyword=BIOFILMS kn-keyword=BIOFILMS en-keyword=MOTILITY kn-keyword=MOTILITY en-keyword=IRON kn-keyword=IRON en-keyword=IDENTIFICATION kn-keyword=IDENTIFICATION en-keyword=SIDEROPHORES kn-keyword=SIDEROPHORES en-keyword=SPECIFICITY kn-keyword=SPECIFICITY en-keyword=FLUORESCENT kn-keyword=FLUORESCENT END start-ver=1.4 cd-journal=joma no-vol=34 cd-vols= no-issue=4 article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19987 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Measuring system for magnetostriction of silicon steel sheet under AC excitation using optical methods en-subtitle= kn-subtitle= en-abstract= kn-abstract=

A measuring system for magnetostriction of silicon steel sheet using optical methods and a single sheet tester has been developed to establish a standard test method for IEC and JIS. Various factors affecting measurement accuracy and reproducibility of the developed system are examined. Two optical instruments, such as a laser Doppler vibrometer and a heterodyne displacement meter, are compared. 3-D characteristics of magnetostriction under ac excitation in the rolling direction are measured up to 2.0 T

en-copyright= kn-copyright= en-aut-name=NakaseTomoya en-aut-sei=Nakase en-aut-mei=Tomoya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NakanoMasanori en-aut-sei=Nakano en-aut-mei=Masanori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=FujiwaraKoji en-aut-sei=Fujiwara en-aut-mei=Koji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TakahashiNorio en-aut-sei=Takahashi en-aut-mei=Norio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University en-keyword=Doppler measurement kn-keyword=Doppler measurement en-keyword=ferromagnetic materials kn-keyword=ferromagnetic materials en-keyword=iron alloys kn-keyword=iron alloys en-keyword=magnetic variables measurement kn-keyword=magnetic variables measurement en-keyword=magnetostriction kn-keyword=magnetostriction en-keyword=measurement by laser beam kn-keyword=measurement by laser beam en-keyword=silicon alloys kn-keyword=silicon alloys END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page=3956 end-page=3958 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990305 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Single sheet tester having open magnetic path for measurement of magnetostriction of electrical steel sheet en-subtitle= kn-subtitle= en-abstract= kn-abstract=

A single sheet tester having closed magnetic path (a closed type of SST) has a problem that measurement accuracy of magnetostriction is considerably affected by electromagnetic force between specimen and yoke. Therefore, an open type has been developed. In order to get uniform flux distribution in a sufficiently large region, a compensating magnetizing winding is installed, and a method of waveform control is investigated, in which applied voltages to main and compensating windings are adjusted individually. The effectiveness of the newly developed open type is demonstrated by measuring magnetostrictions of thin amorphous sheet as well as highly grain-oriented silicon steel sheet

en-copyright= kn-copyright= en-aut-name=NakaseTomoya en-aut-sei=Nakase en-aut-mei=Tomoya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NakanoMasanori en-aut-sei=Nakano en-aut-mei=Masanori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=FujiwaraKoji en-aut-sei=Fujiwara en-aut-mei=Koji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TakahashiNorio en-aut-sei=Takahashi en-aut-mei=Norio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University en-keyword=amorphous magnetic materials kn-keyword=amorphous magnetic materials en-keyword=ferromagnetic materials kn-keyword=ferromagnetic materials en-keyword=iron alloys kn-keyword=iron alloys en-keyword=magnetic flux kn-keyword=magnetic flux en-keyword=magnetic variables measurement kn-keyword=magnetic variables measurement en-keyword=magnetostriction kn-keyword=magnetostriction en-keyword=silicon alloys kn-keyword=silicon alloys en-keyword=steel kn-keyword=steel END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=3 article-no= start-page=173 end-page=180 dt-received= dt-revised= dt-accepted= dt-pub-year=1974 dt-pub=197406 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Clinical studies on iron metabolism of erythroblasts in preleukemic stage en-subtitle= kn-subtitle= en-abstract= kn-abstract=

The appearance of sideroblasts in hypoplastic anemia (HAl and acute myelocytic leukemia (AML), together with their sideroblastograms, was studied. Hematological studies on cases with type III sideroblast dominance by sideroblastograms produced the following results. Type III sideroblast dominant HA was observed in three of 63 cases. Two of the above three cases had what we call "atypical factor", while the remaining one became AML in its clinical course and could be considered to be leukemia in a hypoplastic preleukemic stage. Type III sideroblast dominant AML was noted in five of 32 cases. Three of these five cases are compatible with low percentage leukemia, and one of the above three cases showed ringed sideroblasts exhibiting erythroleukemia in the terminal stage. In HA and AML, type III sideroblast dominant cases have to be examined in relation to atypical HA and atypical leukemia. Changes of iron meta. bolism in erythroblasts with preleukemic stage will be attributable to disturbance of erythropoiesis such as erythroid hyperplasia in bone marrow and also, in part, to disturbance of hemoglobin synthesis.

en-copyright= kn-copyright= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=Takahashilsao en-aut-sei=Takahashi en-aut-mei=lsao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SugiyamaMotoharu en-aut-sei=Sugiyama en-aut-mei=Motoharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=2 article-no= start-page=119 end-page=124 dt-received= dt-revised= dt-accepted= dt-pub-year=1974 dt-pub=197404 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Hematological studies on iron- and folate-requirements in pregnancy en-subtitle= kn-subtitle= en-abstract= kn-abstract=

Hematological changes and serum iron, vitamin B12 and folate levels after administration of iron plus folic acid were com· pared with changes and levels after supplement of iron alone in 100 pregnant women. No hematological benefits by adding folic acid was revealed. It is concluded that folic acid deficiency in pregnant women is mild and routine supplementation of folic acid is not necessary except for proved cases of folate deficiency. As to the reason why folic acid deficiency is so mild and megaloblastic anemia is so rare in Japan, uniformity of dietary habits, i. e. boiled rice as basic food, was discussed.

en-copyright= kn-copyright= en-aut-name=TaguchiHirokuni en-aut-sei=Taguchi en-aut-mei=Hirokuni kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SanadaHiroshi en-aut-sei=Sanada en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HaraKoichi en-aut-sei=Hara en-aut-mei=Koichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=HaseiToshio en-aut-sei=Hasei en-aut-mei=Toshio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=IwasakiIchiro en-aut-sei=Iwasaki en-aut-mei=Ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=SumitomoRyogo en-aut-sei=Sumitomo en-aut-mei=Ryogo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Okayama University affil-num=6 en-affil= kn-affil=Okayama Hakuaikai Hospital END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=2 article-no= start-page=69 end-page=79 dt-received= dt-revised= dt-accepted= dt-pub-year=1974 dt-pub=197404 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Phagocytic properties of lung alveolar wall cells en-subtitle= kn-subtitle= en-abstract= kn-abstract=

For the purpose to define the mechanism of heavy metal intoxication by inhalation, morphologic observations were made on rat lungs after nasal instillation of iron colloid particles of positive and negative electric charges. Histochemical observation was also made on the liver and spleen of these animals. The instilled iron colloid particles reach the alveolar cavity easily, as can be seen in the tissue sections stained by Prussian blue reaction. Alveolar macrophages do take up them avidly both of positive and negative charges, though much less the positive particles than negative ones. In contrast, the alveolar epithelial cells take up solely positive particles by phagocytosis but not negative ones. Electron microscope observation revealed that the positive particles are ingested by Type I epithelial cells by pinocytosis and by Type II cells by phagocytosis as well. Then the iron colloid particles are transferred into the basement membrane by exocytosis. Travelling through the basement membrane they are again taken up by capillary endothelial cells by phagocytosis. Some particles were found in the intercellular clefts of capillary endothelial cells but not any iron colloid particles in the intercellular spaces of epithelial cells and in the capillary lumen. However, the liver and spleen tissues of the animals given iron colloid showed a strong positive iron reaction. On the basis of these observations, the mechanism of acute intoxication by inhaling heavy metal dusts like lead fume is discussed from the view point of selective uptake of alveolar epithelial and capillary endothelial cells for the particles of the positive electric cha'rge.

en-copyright= kn-copyright= en-aut-name=TanakaAkisuke en-aut-sei=Tanaka en-aut-mei=Akisuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=46 cd-vols= no-issue=4 article-no= start-page=233 end-page=239 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=199208 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Histochemical detection of lipid peroxidation in human gastrointestinal, mammary and renal carcinomas. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

Constitutional lipid peroxidation in randomly selected 32 cases of clinically advanced carcinoma from human gastrointestinal tract (20 cases), breast (8 cases) and kidney (4 cases) was examined histochemically in frozen sections using cold Schiff's reagent. Only two cases of gastrointestinal carcinoma were positive by the reagent. Non-cancerous parenchymal cells were negative. These findings suggest that detectable constitutional lipid peroxidation seldom occurs in either cancerous or normal tissues. The capacity for normal and neoplastic tissues to undergo lipid peroxidation was also studied by incubation with an iron-NADPH pro-oxidant system. Normal parenchymal cells showed, to various degrees, a positive reactivity. In gastrointestinal carcinoma, 6 out of 7 cases of well differentiated adenocarcinoma reacted positively, whereas 2 out of 8 cases of moderately to poorly differentiated adenocarcinoma disclosed weakly positive reactions. Mucinous adenocarcinomas (4 cases) were all negative. Signet-ring cell carcinoma (1 case) was positive. One out of 8 cases of breast cancer also showed positive reaction. Four renal cell carcinomas were all negative. Cancer cells have lower capacity to undergo lipid peroxidation than normal cells, when the iron-NADPH pro-oxidant system was employed. In gastrointestinal carcinoma, the ability to undergo lipid peroxidation by the iron-NADPH pro-oxidant seems to be correlated with their histological differentiation. This fact may suggest that differences in lipid composition or the NADPH enzyme system exist between well differentiated and poorly differentiated gastrointestinal malignancies.

en-copyright= kn-copyright= en-aut-name=YuYing-yan en-aut-sei=Yu en-aut-mei=Ying-yan kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OginoTeteuya en-aut-sei=Ogino en-aut-mei=Teteuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OkadaShigeru en-aut-sei=Okada en-aut-mei=Shigeru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Himeji Red-Cross Hospital affil-num=3 en-affil= kn-affil=Okayama University en-keyword=lipid peroxidation kn-keyword=lipid peroxidation en-keyword=histochemistry kn-keyword=histochemistry en-keyword=cancer kn-keyword=cancer en-keyword=iron kn-keyword=iron en-keyword=NADPH kn-keyword=NADPH END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=3 article-no= start-page=147 end-page=152 dt-received= dt-revised= dt-accepted= dt-pub-year=1963 dt-pub=196306 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Absorption of fatty acid-iron from the intestine II. Absorp­tion of iron after repeated oral administrations of fatty acid-iron and intravenous injection of collol-dal fatty acid-iron en-subtitle= kn-subtitle= en-abstract= kn-abstract=

1. In an attempt to see how fatty acid iron will be absorbed from the intestine, a single administration of fatty acid iron was given and when histological observations were done with lapse of time, it was found that the iron compound was first split into iron and fatty acid and each of them was then absorbed by the intestines by a different mechanism as described in the first report. The present experiment further confirmed these findings. 2. Following the first experiment, another attempt was made to determine how iron was absorbed in the animals given successive oral administration under various conditions or a single intravenous injection of colloidal fatty acid iron, and it was demonstrated that under a certain condition the presence of fat in the feed accelerates the iron absorption from the intestine but its mechanism remains unclarified.

en-copyright= kn-copyright= en-aut-name=AmanoToshio en-aut-sei=Amano en-aut-mei=Toshio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=3 article-no= start-page=139 end-page=145 dt-received= dt-revised= dt-accepted= dt-pub-year=1963 dt-pub=196306 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Absorption of fatty acid-iron from the intestine I. Absorp­tion of iron after a single oral administration of fatty acid-iron en-subtitle= kn-subtitle= en-abstract= kn-abstract=

It has been indicated that, when fatty acid iron is administered orally, the iron compound is split into iron and fatty acid and absorbed by different mechanisms.

en-copyright= kn-copyright= en-aut-name=AmanoToshio en-aut-sei=Amano en-aut-mei=Toshio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=5 article-no= start-page=239 end-page=252 dt-received= dt-revised= dt-accepted= dt-pub-year=1963 dt-pub=1963 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Studies on the treatment of malignant tumors with fibroblast-inhibiting agent. II. Effects of chloro­quine on animal tumors en-subtitle= kn-subtitle= en-abstract= kn-abstract=

Based on our original concept, a fibroblast-inhibiting agent, chloroquine, was used against various animal tumors. Among transplanted animal tumors, the drug was most effective on relatively connective tissue-rich Bashford and Brown-Pearce tumors, as reflected by prolongation of life span, inhibition of tumor growth, inhibition of lowering of liver catalase activity, improvement of iron metabolism, increase of tumor necrosis, inhibition of connective tissue formation, and decrease of acid mucopolysaccharide. On the other hand, it was of little advantage in Ehrlich, Yoshida and MH134 tumors which contain little connective tissue, except for a decrease of the amount of ascites and ascites tumor cells in the former two tumors. These results indicate that chloroquine suppress the growth of the tumors relatively rich in connective tissue. This effect of chloroquine appears to be due to the primary attack of the stromal connective tissue of tumors being followed by the degeneration of tumor cells, though its probable anti-tumor activity by the indirect effects through its anti-inflammatory and systemic humoral activities should be taken into consideration.

en-copyright= kn-copyright= en-aut-name=HirakiKiyoshi en-aut-sei=Hiraki en-aut-mei=Kiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=2 article-no= start-page=77 end-page=104 dt-received= dt-revised= dt-accepted= dt-pub-year=1963 dt-pub=196304 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Studies on the metabolism of connective tissue en-subtitle= kn-subtitle= en-abstract= kn-abstract=

A granuloma pouch was formed on the back of rats by the original method of SELYE. Seven days when granuloma tissue reached its maximum, 35S labeled ChS, 59Fe labeled ChS-Fe, labeled ferric ammoninum citrate and colloidal 198Au were injected into the pouch and their absorption and organ distribution examined and compared with the results in the case where 59Fe labeled ferric ammoninum citrate and colloidal 198Au were injected into the gluteal muscle. 1. When 35S labeled ChS was injected into the granuloma pouch, radioactivity of the organs per gram tissue was high in the kidney, liver, bone marrow and spleen, in descending order. The maximum activity was seen 12 to 24 hours after injection, which is slow compared to the results obtained by KISHIDA in intraperitoneal and oral administration. 2. The absorption of Ch S-Fe by pouch where the iron is enveloped by the large ChS molecule, is slower than that of ferric ammonium citrate, an inorganic compound. 3. The uptake of Fe from the blood by bone marrow is larger when the increase of blood Fe ion concentration is slow, rater than when the increase is rapid. 4. When conoidal 198Au is injected into the pouch and injected into the" gluteal muscle, the 198Au is phargocytozed by the reticuloendothelial system organs, the liver showing the largest uptake among all organs. 5. In the intramuscular injection of colloidal 198Au and 59Fe labeled ferric ammonium citrate, radioactivity of pouch fluid is lower than that of blood. However, the difference between the two is less in the case of colloidal 198Au. 6. In the granuloma ponch, radioactivity of the abdominal wall proves to be greater than that of the dorsal wall.

en-copyright= kn-copyright= en-aut-name=TakatoriMasaaki en-aut-sei=Takatori en-aut-mei=Masaaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=4 article-no= start-page=183 end-page=192 dt-received= dt-revised= dt-accepted= dt-pub-year=1963 dt-pub=196308 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Identification of human blood by fibrin plate method, a supplemental study en-subtitle= kn-subtitle= en-abstract= kn-abstract=

Following Fibrin Plate Method of SZOLLOSY and RENGEI² , and ASTRUP and MULLERTZ³, the author conducted a series of experiments in an attempt to identify human blood by detecting the proactivator believed to be one of the enzyme proteins contained abundantly in human blood. As the results it has been found that with 0.1 mg. % SK-solution human blood alone responds to the reaction, showing almost absolute species-specificity within 4 hours but not with blood of monkey. In addition, the sensitivity is so high that it responds positively up to the dilution of 1: 8,000 to 1: 10,000 (human blood: physiological saline solution). By means of this method using 0.1 mg% SK-solution it has been clearly demonstated that the identification of human blood is possible in a variety of conditions and states as may be encountered in practical legal medicine such as with blood stains in cloth, wood, stone, leaves of tree even with a trace of blood stain, old human blood stain left standing for 20 to 30 years, old blood mixed with iron rust, blood stains soaked in various oils, and even the blood stained cloth washed thoroughly and left standing in room temperature for 6 months. Therefore, this Fibrin Plate Method seems to be the excellent one for the identification of human blood.

en-copyright= kn-copyright= en-aut-name=MohriMasao en-aut-sei=Mohri en-aut-mei=Masao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=22 cd-vols= no-issue=1 article-no= start-page=37 end-page=49 dt-received= dt-revised= dt-accepted= dt-pub-year=1968 dt-pub=196802 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Suppression of antibody formation by the reticuloendothelial (RES)-blockade. I. Effects of the RES-blockade with macromolecular polyvinyl pyrrolidone en-subtitle= kn-subtitle= en-abstract= kn-abstract=

For the purpose of revealing the role of the reticuloendothelial system (RES) for the antibody formation, the rats which received the repeated intraperitoneal and subcutaneous injections of a vast amount of PVP were challenged by bovine serum albumin (BSA) introducing through 2 routes of intramuscular and intravenous, and then antibody formation was observed. Blood cell count and clearance rate of radiogold were observed for the purpose of obtaining the information of blockade grade of the RES by PVP. Phagocytic activity of macrophages ingesting PVP against iron colloid were also observed in vitro. 1. A severe anemia was induced by the administration of a vast amount of PVP, 15 ml of 3% solution daily or every other day for 63 days. Histological picture indicated the suppressed erythropoiesis probably by iron deficiency or the lowered iron transporting activity of the RES, as the anemia recovered after intraperitoneal iron injections. 2. With the generalized and marked swelling of the RES, the cells in germinal center of spleen and lymph nodes were extremely swollen and lymphocytes disappeared completely, suggesting that the macrophages in germinal center play an important role in reproduction and differentiation of lymphocytes. 3. The phagocytic activity of the RES as understood from the clearance rate of radiogold was suppressed only slightly even by a heavy deposition of PVP after the repeated injections. The state of blockade or the suppressed phagocytic activity persisted for 48 hours or more after the several PVP injections. However, complete blockade of the RES or inactivation of the phagocytic activity by PVP injection was not attained. 4. A prolonged treatment of animals with PVP caused delay in the appearance of circulating antibody but the final titration reached the same level as that of control. The data suggest that the blockade of the RES by PVP induces the delay in the transmittance of the information for the antibody formation from the macrophages to the immunologically competent cells but no delay in the ingesting antigen by the macrophages.

en-copyright= kn-copyright= en-aut-name=OhbuchiShinji en-aut-sei=Ohbuchi en-aut-mei=Shinji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=22 cd-vols= no-issue=3 article-no= start-page=137 end-page=146 dt-received= dt-revised= dt-accepted= dt-pub-year=1968 dt-pub=196806 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Suppression of antibody formation by the res-blockade. Ⅲ. Effects of the res-blockade with methyl palmitate en-subtitle= kn-subtitle= en-abstract= kn-abstract=

The rats which received the repeated intra peritoneal or intravenous　injections of methyl palmitate showed a marked depressed phagocytic activity　of the RES as shown by the clearance test with radioactive iron as　well as by histological observations and a significantly suppressed antibody　formation against the challenge by BSA.　Differing from the cases of the blockade of the RES made by PVP or　radiogold, the injection of methyl palmitate did not result in any injurious　effect on the lymph follicles of lymph nodes and spleen and the plasma　cells proliferation as revealed by the histological observation. Histochemical observations of iron phagocytosis of the RES done by　Perls stain revealed that methyl palmitate　suppressed the phagocytic activity　of the Kupffer cells of the liver dramatically and also suppressed the　phagocytic activity of the sinus-lining cells in spleen to a lesser degree.　The result indicates that the injection of methyl palmitate attacks the phagocytic　function of the RES selectively and induces the reduced immune　response of the organism without giving any damages to the proliferation of immunologically com petent cells.　The fact suggests that the RES lowered in their phagocytic activity　fails to produce the informational substance for immune　response, showing　a lower level in the antibody formation even in the presence of antigen　and proliferating immunologically competent cells.

en-copyright= kn-copyright= en-aut-name=OhbuchiShinji en-aut-sei=Ohbuchi en-aut-mei=Shinji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=3 article-no= start-page=93 end-page=107 dt-received= dt-revised= dt-accepted= dt-pub-year=1967 dt-pub=196706 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Studies on the mechanism of phagocytosis. I. Effect of metabolic inhibitors on the phagocytosis of iron colloid particles by ascites macrophages en-subtitle= kn-subtitle= en-abstract= kn-abstract=

For the purpose to clarify the mechanism of phagocytosis or pinocytosis, the observations on the tumor ascites, including the macrophages as well as the tumor cells, were carried out by incubating with the iron colloid with or without pretreatment by several inhibibitors of glycolysis, oxidative phosphorylation and respiration, or under hypotonic or cold environments. The results have demonstrated that there are three steps in the phagocytosis. The first step is the adhesion of the substance to the cell surface, which is not an energy-requiring process. The second step is the engulfing which proceeds by using the energy supplied by glycolysis. The third is the accumulation of the substance into the vesicles through the canaliculi connecting the cell surface with the vesicles. The discussion was made on the existence of the active site on the cell surface to which the substance can be adhered, and the accumulation mechanism of the material into the phagocytic vesicles by the membrane flow, the flowing movement of the outer lipid layer of a unit membrane through the canaliculi which connect the cell surface to the phagocytic vesicles.

en-copyright= kn-copyright= en-aut-name=YokomuraE-iti en-aut-sei=Yokomura en-aut-mei=E-iti kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SenoSatimaru en-aut-sei=Seno en-aut-mei=Satimaru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SogabeKoiti en-aut-sei=Sogabe en-aut-mei=Koiti kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NakatsukaAyako en-aut-sei=Nakatsuka en-aut-mei=Ayako kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KuboToru en-aut-sei=Kubo en-aut-mei=Toru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=4 article-no= start-page=177 end-page=183 dt-received= dt-revised= dt-accepted= dt-pub-year=1967 dt-pub=196708 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=The iron content of gastric juice: in relation to the cause of idiopathic hypochromic anemia en-subtitle= kn-subtitle= en-abstract= kn-abstract=

Non-hemin iron content in gastric juice was examined in 46 patients with various blood diseases, especially idiopathic hypochromic anemia and in 26 healthy controls. 1. The iron content in gastric juice was found to be 290 μg/ dl in healthy controls, a lower value of 110 μg/ dl in idiopathic hypochromic anemia and a higher value of 550 μg / dl in aplastic anemia. These values were in a close correlation with serum iron or sideroblasts. 2. In idiopathic hypochromic anemia there was also a close correlation between the iron content in gastric juice and hemoglobin. In the course of treating idiopathic hypochromic anemia (stage of recovery of anemia) the iron content in gastric juice showed a marked increase over the value in healthy controls as well as a transient increase after an intravenous iron tolerance test. This condition may be interpreted as an "iron-losing anemia". Iron excretion of gastric mucosa in various blood diseases and its changes in the course of treating idiopathic hypochromic anemia in relation to the cause of this anemia were discussed.

en-copyright= kn-copyright= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YamanaMasatoshi en-aut-sei=Yamana en-aut-mei=Masatoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=18 cd-vols= no-issue=3 article-no= start-page=127 end-page=137 dt-received= dt-revised= dt-accepted= dt-pub-year=1964 dt-pub=196406 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Iron metabolism of in­testinal mucosa in various blood diseases en-subtitle= kn-subtitle= en-abstract= kn-abstract=

For the investigation of iron metabolism in the intestinal mucosa in various　blood diseases, intestinal biopsy (duodenum) was performed on 10 healthy controls　and 35 cases with various blood diseases. The following are　the results　of the studies on distribution of stainable　iron, amounts of non-hemin iron in the　biopsied materials, and iron uptake of the intestinal epithelial cells.　1) An evaluation of distribution of stainable iron by Berlin　blue reaction　showed none or very mild degree, if any,　inhealthy controls, an increase in　aplastic anemia,　pernicious anemia, some of leukemias and in iron deficiency anemia following iron therapy, and a decrease in　idiopathic hypochromic anemia, anchylostomiasis anemia,　anemia with cancer, myxedema, hemolytic anemia,　and in　some of leukemias. Some of anemia with cancer, however,　showed an　increase of a certain degree. In iron absorption tests, no changes were found other than a very mild increase in aplastic anemia. 2) Non-hemin iron was 70-112γ/g in healthy controls, increased in aplastic anemia approximately to 100-200γ/g, ranging 40-130γ/g in leukemia, and decreased in idiopathic hypochromic anemia and in anemia with cancer ranging 30-60γ/g and 30-50γ/g respectively. Amounts of non-hemin iron and serum iron or sideroblasts show a fair correlation. The fractionation of nonhemin iron in aplastic anemia didn't show any difference in relationship of each fraction from healthy controls despite the increased amount in the former. 3) A radioautographic evaluation of iron uptake by intestinal epithelium was performed by our device for evaluation of intestinal absorption capacity. The iron uptake was mild in healthy controls, almost none in aplastic anemia, and marked in iron deficiency anemia where it was decreased approximately to the level of healthy controls following iron therapy. 4) The intestinal tissue iron showed a series of changes similar to those of iron present in the serum or erythroblasts, and the non-hemin iron in the intestinal mucosa is inversely correlated with iron uptake of epithelium and is considered to regulate the absorption according to its amount.

en-copyright= kn-copyright= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TsuchidaJunichiro en-aut-sei=Tsuchida en-aut-mei=Junichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KodaniHidenari en-aut-sei=Kodani en-aut-mei=Hidenari kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=5 article-no= start-page=447 end-page=450 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=198310 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Deviation of somatosensory evoked potential and lateral dominance of spike activity in iron-induced epileptic cortex of the rat. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

A chronic epileptic focus was induced by a microinjection of ferric chloride solution into the sensorimotor cortex of rats. Two types of somatosensory evoked potentials (SEPs) were recorded from the cortex near the injection site. In animals showing an initial positive-negative biphasic SEP, spikes appeared in electrocorticograms (ECoGs) more frequently on the side ipsilateral to the injection site than on the contralateral side, whereas in animals showing an initial negative monophasic SEP, spikes appeared more frequently on the contralateral side.

en-copyright= kn-copyright= en-aut-name=HattoriYukio en-aut-sei=Hattori en-aut-mei=Yukio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MoriwakiAkiyoshi en-aut-sei=Moriwaki en-aut-mei=Akiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NishidaNobuyoshi en-aut-sei=Nishida en-aut-mei=Nobuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YasuharaHiromichi en-aut-sei=Yasuhara en-aut-mei=Hiromichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=HoriYasuyo en-aut-sei=Hori en-aut-mei=Yasuyo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Okayama University en-keyword=rat cerebral cortex kn-keyword=rat cerebral cortex en-keyword=iron-induced epileptic foces kn-keyword=iron-induced epileptic foces en-keyword=somatosensory evoked potential kn-keyword=somatosensory evoked potential en-keyword=electrographic discharge kn-keyword=electrographic discharge END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=5 article-no= start-page=393 end-page=400 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=198310 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Uptake of iron and nitrilotriacetate (NTA) in rat liver and the toxic effect of Fe-NTA. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

A previous study has shown that a single injection of ferric nitrilotriacetate (Fe-NTA) produces hepatic parenchymal iron loading in rats. The present paper reports on iron uptake by rat liver and iron toxicity in the liver after a single injection of Fe-NTA (7.5 mg Fe/kg B.W.). Iron uptake was examined with 59Fe-NTA and Fe-[14C]-NTA. Thirty percent of the injected 59Fe was incorporated in the liver non-heme iron fraction at 3 h and retained for 240 h. Only 1% of the 14C injected as Fe-[14C]-NTA was taken up by the liver at 3 h. Gel filtration with a Sephadex G-25 column of the supernatant fraction of the liver obtained 3 h after the injection showed two peaks of 14C activity. One was eluted in the void volume, and the other corresponded to [14C]-NTA. The former had a molecular weight of 5,000-10,000 as determined with a Sephacryl S-300 column and also had 59Fe activity. The electron spin resonance spectra showed that the generation of a free radical in the liver was initiated within 1 h of the iron administration. The free radical generated in the serum by Fe-NTA was revealed to be superoxide by the spin trapping method. These results suggest that Fe-NTA transfers iron to transferrin in the serum and induces hepatic iron loading. Small amounts of the injected iron were taken up by the liver as Fe-NTA and generated superoxide which may have induced lipid peroxidation of the cellular membranes.

en-copyright= kn-copyright= en-aut-name=MatsuuraRieko en-aut-sei=Matsuura en-aut-mei=Rieko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Okayama University en-keyword=Fe-NTA kn-keyword=Fe-NTA en-keyword=liver kn-keyword=liver en-keyword=lipid peroxidation kn-keyword=lipid peroxidation en-keyword=transferrin kn-keyword=transferrin en-keyword=electron spin resonance kn-keyword=electron spin resonance END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=4 article-no= start-page=377 end-page=380 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=198308 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Elicitation of cyclic AMP accumulation by norepinephrine in the iron-induced epileptogenic cerebral cortex of rats. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

A microinjection of ferric chloride solution into the left frontal cortex of rats induced epileptic discharges which were recorded by electrocorticography. In animals having such electrographic seizure activity 30 to 60 days after the injection, the accumulation of cyclic AMP elicited by norepinephrine was examined in slices from four cortical regions. The accumulation was significantly greater in the left anterior area, into which region the ferric chloride solution was injected, than in the right anterior area. There was also a tendency for greater norepinephrine-elicited accumulation of cyclic AMP to occur in the left posterior area than in the right posterior area.

en-copyright= kn-copyright= en-aut-name=HattoriYukio en-aut-sei=Hattori en-aut-mei=Yukio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MoriwakiAkiyoshi en-aut-sei=Moriwaki en-aut-mei=Akiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=YasuharaHiromichi en-aut-sei=Yasuhara en-aut-mei=Hiromichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NishidaNobuyoshi en-aut-sei=Nishida en-aut-mei=Nobuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=HoriYasuo en-aut-sei=Hori en-aut-mei=Yasuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Okayama University en-keyword=rat cerebral cortex kn-keyword=rat cerebral cortex en-keyword=iron-induced epileptic discharge kn-keyword=iron-induced epileptic discharge en-keyword=cortical slices kn-keyword=cortical slices en-keyword=cyclic AMP kn-keyword=cyclic AMP en-keyword=norepinephrine kn-keyword=norepinephrine END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=4 article-no= start-page=291 end-page=299 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=198308 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Dual Effects of Glutamate on Cyclic AMP Levels in Slices of Rat Cerebral Cortex with an Iron-Induced Epireptic Focus en-subtitle= kn-subtitle= en-abstract= kn-abstract=

An epileptic focus not resulting in generalized convulsions was induced by a microinjection of ferric chloride solution into the left anterior cortex of rats. The formation of the epileptic focus was confirmed by the appearance of bilateral spike and slow wave complexes as well as focal isolated spikes in electrocorticograms (ECoGs). The effect of glutamate on cyclic AMP accumulation was examined in incubated slices prepared from four quadrants of the epileptic cortex. In animals showing isolated spikes 8 to 10 days after the microinjection, the effect of glutamate on cyclic AMP accumulation was stimulatory. It was greatest in the left anterior quadrant which included the injection site, but only slight in the left and right posterior quadrants. In animals showing spike and slow wave complexes 30 to 60 days after the microinjection, the stimulatory effect of glutamate was also most pronounced in the left anterior quadrant. In the right anterior and the left posterior quadrants glutamate had almost no effect, while in the right posterior quadrant, glutamate was inhibitory.

en-copyright= kn-copyright= en-aut-name=HattoriYukio en-aut-sei=Hattori en-aut-mei=Yukio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=InabaKozo en-aut-sei=Inaba en-aut-mei=Kozo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MoriwakiAkiyoshi en-aut-sei=Moriwaki en-aut-mei=Akiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NishidaNobuyoshi en-aut-sei=Nishida en-aut-mei=Nobuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=YasuharaHiromichi en-aut-sei=Yasuhara en-aut-mei=Hiromichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=HoriYasuo en-aut-sei=Hori en-aut-mei=Yasuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Okayama University affil-num=6 en-affil= kn-affil=Okayama University en-keyword=rat cerebral cortex kn-keyword=rat cerebral cortex en-keyword=iron-induced epileptic focus kn-keyword=iron-induced epileptic focus en-keyword=cortical slices kn-keyword=cortical slices en-keyword=glutamate kn-keyword=glutamate en-keyword=cyclic AMP kn-keyword=cyclic AMP END start-ver=1.4 cd-journal=joma no-vol=54 cd-vols= no-issue=3 article-no= start-page=111 end-page=118 dt-received= dt-revised= dt-accepted= dt-pub-year=2000 dt-pub=200006 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=The perineuronal proteoglycan surface coat in the adult rat brain, with special reference to its reactions to Gomori's ammoniacal silver. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

The present study showed that many neurons in the adult rat brain possessed a perineuronal sulfated proteoglycan surface coat which reacted to cationic iron colloid and aldehyde fuchsin. This surface coat was stained supravitally with Ehrlich's methylene blue and doubly stained with Ehrlich's methylene blue and aldehyde fuchsin. The surface coat was also stained with Gomori's ammoniacal silver and doubly stained with Gomori's ammoniacal silver and cationic iron colloid. The surface coat was usually expressed together with a nerve cell surface glycoprotein net detectable with lectin Wisteria floribunda agglutinin. These findings indicate that the perineuronal proteoglycan surface coat is identical to Cajal's superficial reticulum and contains some collagenous elements. It was further demonstrated that collagenase digestion erased Gomori's ammoniacal silver impregnation within the perineuronal proteoglycan surface coat.

en-copyright= kn-copyright= en-aut-name=EndoRyutaro en-aut-sei=Endo en-aut-mei=Ryutaro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MurakamiShinichiro en-aut-sei=Murakami en-aut-mei=Shinichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MasudaYu en-aut-sei=Masuda en-aut-mei=Yu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TaguchiTakehito en-aut-sei=Taguchi en-aut-mei=Takehito kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OhtsukaAiji en-aut-sei=Ohtsuka en-aut-mei=Aiji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=NishizakiKazunori en-aut-sei=Nishizaki en-aut-mei=Kazunori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=MurakamiTakuro en-aut-sei=Murakami en-aut-mei=Takuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Okayama University affil-num=6 en-affil= kn-affil=Okayama University affil-num=7 en-affil= kn-affil=Okayama University en-keyword=brain kn-keyword=brain en-keyword=extracellular matrix kn-keyword=extracellular matrix en-keyword=perineuronal proteoglycans kn-keyword=perineuronal proteoglycans en-keyword=cell surface glycoproteins kn-keyword=cell surface glycoproteins END start-ver=1.4 cd-journal=joma no-vol=45 cd-vols= no-issue=6 article-no= start-page=401 end-page=408 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=199112 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Radical-promoting "free" iron level in the serum of rats treated with ferric nitrilotriacetate: comparison with other iron chelate complexes. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

<p>Iron plays a critical role in the production of activated oxygen species and the activity of chelated iron in the biological system depends on the chemical forms of the chelators. In the present study, we used ferric nitrolotriacetate (Fe-NTA, molar ratio of iron to chelators = 1:3), ferric ethylenediaminetetraacetate (Fe-EDTA, 1:3 complex) and ferric Desferal (Fe-Des, 1:1.1 complex) to see their "free" iron content in aqueous solutions in vitro and in the serum obtained after a single intraperitoneal injection of the chelates to rats (7.5 mg of iron/kg). "Free" iron was measured by the bleomycin-assay system. When Fe-NTA was dissolved in water, "free" iron increased linearly with total iron concentration up to 10 microM, whereas Fe-EDTA and Fe-Des showed no "free" iron with corresponding iron concentrations. When these three ferric chelates were dissolved in normal rat serum, "free" iron in Fe-NTA increased abruptly between 40 microM and 60 microM iron concentrations, then increased slowly up to 100 microM. Fe-Des did not show any "free" iron at comparable iron concentrations. Fe-EDTA had an intermediate "free" iron level in the serum. Among the ferric chelate complexes, Fe-NTA showed a much faster increase of and a higher content of "free" iron in the serum than the other two complexes after a single injection of the chelates into rats.(ABSTRACT TRUNCATED AT 250 WORDS)</p>

en-copyright= kn-copyright= en-aut-name=LiuMiao en-aut-sei=Liu en-aut-mei=Miao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OkadaShigeru en-aut-sei=Okada en-aut-mei=Shigeru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KawabataTeruyuki en-aut-sei=Kawabata en-aut-mei=Teruyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University en-keyword="free" iron kn-keyword="free" iron en-keyword= ferric nitrilotriacetate (Fe-NTA) kn-keyword= ferric nitrilotriacetate (Fe-NTA) en-keyword= ferric ethylenediaminetetraacetate (Fe-EDTA) kn-keyword= ferric ethylenediaminetetraacetate (Fe-EDTA) en-keyword=ferric desferrioxamine (Fe-Desferal kn-keyword=ferric desferrioxamine (Fe-Desferal en-keyword= Fe-Des) kn-keyword= Fe-Des) en-keyword=free radecal kn-keyword=free radecal END start-ver=1.4 cd-journal=joma no-vol=58 cd-vols= no-issue=3 article-no= start-page=111 end-page=118 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=200406 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Natural antioxidants may prevent posttraumatic epilepsy: a proposal based on experimental animal studies. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

Head injury or hemorrhagic cortical infarction results in extravasation of blood and breakdown of red blood cells and hemoglobin. Iron liberated from hemoglobin, and hemoglobin itself, are associated with the generation of reactive oxygen species (ROS) and reactive nitrogen species (RNS). ROS and RNS have been demonstrated to be involved in the mechanism of seizures induced by iron ions in the rat brain, an experimental animal model for posttraumatic epilepsy (PTE). ROS are responsible for the induction for peroxidation of neural lipids, i.e., an injury of neuronal membranes, and also could induce disorders in the excitatory and inhibitory neurotransmitters. Antioxidants, such as a phosphate diester of vitamin E and C (EPC-K1) and antiepileptic zonisamide, have been known to prevent the epileptogenic focus formation, or to attenuate seizure activities in the iron-injected rat brain. Natural antioxidants, such as alpha-tocopherol, and condensed tannins, including (-)-epigallocatechin and (-)-epigallocatechin-3-O-gallate, adenosine and its derivative, melatonin, uyaku (Lindera Strychnifolia), fermented papaya preparations, Gastrodia elata BI., and Guilingji, have been demonstrated to scavenge ROS and/or RNS and to be prophylactic for the occurrence of epileptic discharge in the iron-injected rat brain.

en-copyright= kn-copyright= en-aut-name=MoriAkitane en-aut-sei=Mori en-aut-mei=Akitane kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YokoiIsao en-aut-sei=Yokoi en-aut-mei=Isao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NodaYasuko en-aut-sei=Noda en-aut-mei=Yasuko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=WillmoreL James en-aut-sei=Willmore en-aut-mei=L James kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Oita University affil-num=3 en-affil= kn-affil=University of Michigan affil-num=4 en-affil= kn-affil=Saint Louis University of Medicine en-keyword=posttraumatic epilepsy kn-keyword=posttraumatic epilepsy en-keyword=iron-induced epileptic seizures kn-keyword=iron-induced epileptic seizures en-keyword=antioxidant kn-keyword=antioxidant en-keyword=reactive oxygen species kn-keyword=reactive oxygen species en-keyword=reactive ?nitrogen species kn-keyword=reactive ?nitrogen species END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=6 article-no= start-page=431 end-page=442 dt-received= dt-revised= dt-accepted= dt-pub-year=1979 dt-pub=197912 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Scanning electron microscopy of interaction of peripheral blood lymphocytes from colonic cancer patients with human colonic cancer-derived cells; P-4788. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

Peripheral blood lymphocytes and the various lymphocyte fractions from patients with cancer of the colon were cultivated with target cells (P-4788) derived from the colon cancer. Changes in the surface ultrastructure during tumor cell destruction were studied by scanning electron microscopy (SEM). P-4788 cells adhering to the coverslip showed various surface activity. The surfaces of some cells were relatively flat; others were smooth or had fine granules. Still other cells were villous, round or had marked blebs. When host lymphocytes were added to the target cells, adhesion of the two cell groups began by many fine projections. After incubation for 6 h, some lymphocytes had adhered to the target cells. Many lymphocytes had adhered to the target tumor cells by 24--48 h incubation. Ultimately the tumor cells became swollen and disrupted. Most lymphocytes adherent to the target cells had few microvilli. Lymphocytes after elimination of phagocytes by carbonyl iron treatment also adhered readily. Some target cells showed adhesion with lymphocytes passed through nylon-wool columns, although the number of lymphocytes adhering was fewer than in the case of lymphocytes not passed through nylon-wool columns. T cells were collected from lymphocytes that form rosettes with SRBC by isolation with NH4Cl. They had markedly elongated microvilli which in places were sparsely scattered and tended to be localized on the side, a finding which suggests loss of cell activity by the time of SEM. Only a few T cells adhered to target cells and they seemed to be T cells without activity. It was thought that there are cytotoxic cells among T cells and that the co-existence of T cells, non-T cells and monocytes caused target cell destruction.

en-copyright= kn-copyright= en-aut-name=SugiharaMutsuto en-aut-sei=Sugihara en-aut-mei=Mutsuto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Okayama University en-keyword=canning electoron microscope kn-keyword=canning electoron microscope en-keyword=colon cancer-derived cell P-4788 kn-keyword=colon cancer-derived cell P-4788 en-keyword=target cell destruction kn-keyword=target cell destruction en-keyword=lymphocytes kn-keyword=lymphocytes en-keyword=lymphocyte fractions kn-keyword=lymphocyte fractions END start-ver=1.4 cd-journal=joma no-vol=55 cd-vols= no-issue=1 article-no= start-page=41 end-page=50 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=200102 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Experimental study of fast and ultrafast T2-weighted imaging sequences using AMI-25 superparamagnetic iron oxide (SPIO). en-subtitle= kn-subtitle= en-abstract= kn-abstract=

The objective of this study was to evaluate fast and ultrafast T2-weighted images (T2WI), including echo planar imaging (EPI), using an AMI-25 agar phantom. Image quality for conventional spin echo (CSE) and turbo spin echo (TSE) was almost equivalent. In high-resolution TSE, image quality was highest due to the use of a 512 x 256 matrix. Half-Fourier single-shot turbo SE (HASTE) was associated with blurring of images, and turbo-gradient SE (TGSE) showed a deterioration of image quality. EPI also suffered from poor image quality because this method is very sensitive to magnetic field inhomogeneity. CSE showed good signal-to-noise ratio (S/N) and contrast ratio (CR), but also required the longest imaging times. Among the TSE sequences, TSE with a short echo train length (ETL) was superior in terms of S/N. The CR of EPI and fast low angle shot (FLASH) images were improved in proportion to the effective echo time (TE). At present, TSE is inferior to CSE in terms of S/N and CR. However, taking into consideration scanning time, TSE with a short ETL is thought to be suitable for routine examinations. Effective TE is an important factor in gradient echo (GRE) examinations.</P>

en-copyright= kn-copyright= en-aut-name=KurokawaHironori en-aut-sei=Kurokawa en-aut-mei=Hironori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TogamiIzumi en-aut-sei=Togami en-aut-mei=Izumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TsunodaMasatoshi en-aut-sei=Tsunoda en-aut-mei=Masatoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=HikariYoshio en-aut-sei=Hikari en-aut-mei=Yoshio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University en-keyword=MRI kn-keyword=MRI en-keyword= SPIO(superparamagnetic iron oxide) kn-keyword= SPIO(superparamagnetic iron oxide) en-keyword=liver phantom kn-keyword=liver phantom en-keyword= various T2WI(T2-weighted images) kn-keyword= various T2WI(T2-weighted images) END start-ver=1.4 cd-journal=joma no-vol=55 cd-vols= no-issue=6 article-no= start-page=357 end-page=362 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=200112 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of recombinant human erythropoietin administration on lipid peroxidation and antioxidant enzyme(s) activities in preterm infants. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

In the present investigation, we studied the effect of recombinant human erythropoietin (r-HuEPO) on serum malondialdehyde (MDA) as an index of lipid peroxidation, related to iron-catalyzed free radical reaction and erythrocyte superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX) activities in very-low-birth weight (VLBW) infants. Forty premature infants, at gestational ages were less than 33 weeks and birthweights were less than 1,500 g, were enrolled in the study. The study population was randomly divided into 2 groups. Twenty infants in Group 1 (treatment group) were given r-HuEPO, and 20 infants in Group 2 served as the control. r-HuEPO treatment (750 U/kg a week) was initiated on the 10th day of life and continued for 6 weeks. Preterm infants given erythrocyte transfusions during the study were excluded from the results. Serum ferritin and MDA levels, and erythrocyte superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX) activities were analyzed at the end of the first week of life (at the beginning of the study). Subsequently, serum ferritin, and MDA levels were measured at the end of the 3rd and the 6th week. SOD, CAT, and GPX activities in the hemolysate were analyzed at the end of the 4th week. Six infants in the control group and 1 infant in the r-HuEPO group received transfusions through the end of the study, and these infants were excluded from the results. Significantly decreased serum ferritin concentrations were found in the r-HuEPO group compared to those in the control group both at the end of the 3rd and the 6th week (P < 0.05, and P < 0.01, respectively). In addition, serum MDA levels were also significantly reduced in Group 1 compared to control both at the end of the 3rd and the 6th week (P < 0.01 and P < 0.05, respectively). A good correlation was found between serum MDA and ferritin levels in Group 1. When the 2 groups were compared with respect to activities of SOD, CAT, and GPX at the end of the 4th week, no differences were observed. Our findings in this study show that administration of r-HuEPO significantly decreases lipid peroxidation, but does not affect erythrocyte antioxidant enzyme(s) activities in preterm infants. The mechanism responsible for the r-HuEPO-induced decrease in lipid peroxidation may concern inhibition to iron-catalyzed free radical reactions.</P>

en-copyright= kn-copyright= en-aut-name=AkisuMete en-aut-sei=Akisu en-aut-mei=Mete kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TuzunSevgi en-aut-sei=Tuzun en-aut-mei=Sevgi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ArslanogluSertac en-aut-sei=Arslanoglu en-aut-mei=Sertac kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YalazMehmet en-aut-sei=Yalaz en-aut-mei=Mehmet kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KultursayNilgun en-aut-sei=Kultursay en-aut-mei=Nilgun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Egu University Medical School affil-num=2 en-affil= kn-affil=Ege University affil-num=3 en-affil= kn-affil=Egu Univershity Medical School affil-num=4 en-affil= kn-affil=Egu University Medical School affil-num=5 en-affil= kn-affil=Egu University Medical School en-keyword=anemia of prematurity kn-keyword=anemia of prematurity en-keyword=erythropoietin kn-keyword=erythropoietin en-keyword=lipid peroxidation kn-keyword=lipid peroxidation en-keyword=superoxide dismutase kn-keyword=superoxide dismutase en-keyword=catalase kn-keyword=catalase en-keyword=glutathione peroxidase kn-keyword=glutathione peroxidase END start-ver=1.4 cd-journal=joma no-vol=40 cd-vols= no-issue=3 article-no= start-page=163 end-page=173 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=198606 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Generation of active oxygen species by iron nitrilotriacetate (Fe-NTA). en-subtitle= kn-subtitle= en-abstract= kn-abstract=

Ferric nitrilotriacetate (Fe3+-NTA) solution showed maximum absorbance at pH 7.5. The iron was in ferric high-spin state and coordinated octahedrally with a relatively symmetric structure and also probably pentagonally. A spin trapping technique employing 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) yielded a DMPO spin adduct of unknown radical with three doublets (DMPO-Z) and a simple nitroxide radical (Y-NO.) in serum from rats injected intraperitoneally with Fe3+-NTA. When the Fe3+-NTA solution was diluted 500-fold with 50 mM NTA solution, DMPO-Z, Y-NO. and an additional signal, DMPO-OH were observed. The DMPO-Z signal was suppressed by a decrease in oxygen tension, alpha-tocopherol and 3-tert-butyl-4-hydroxy-anisole (BHA). The DMPO-OH signal was suppressed in the presence of ethanol and catalase. Fe2+-NTA solution hardly produced DMPO spin adducts. The Fe3+-NTA solution produced a strong DMPO-OH signal in the presence of H2O2. Rose Bengal solution, a singlet oxygen generating system, produced the same DMPO adducts. Fe3+-NTA reacted with oxygen in solution. The oxygen was activated and might be similar to singlet molecular oxygen. In the presence of H2O2, the Fe3+-NTA solution generated a hydroxyl radical. Fe3+-NTA itself generated free radicals, but Fe2+-NTA did not.

en-copyright= kn-copyright= en-aut-name=KawabataTeruyuki en-aut-sei=Kawabata en-aut-mei=Teruyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=AwaiMichiyasu en-aut-sei=Awai en-aut-mei=Michiyasu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KohnoMasahiro en-aut-sei=Kohno en-aut-mei=Masahiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Japan Electric Optic Laboratory Ltd en-keyword=iron nitrilotriacetate kn-keyword=iron nitrilotriacetate en-keyword=active oxygen kn-keyword=active oxygen en-keyword=lipid peroxidation kn-keyword=lipid peroxidation en-keyword=electron spin resonance kn-keyword=electron spin resonance en-keyword=5 kn-keyword=5 en-keyword=5-dimethyl-1-pyrroline-N-oxide kn-keyword=5-dimethyl-1-pyrroline-N-oxide END start-ver=1.4 cd-journal=joma no-vol=14 cd-vols= no-issue=2 article-no= start-page=105 end-page=117 dt-received= dt-revised= dt-accepted= dt-pub-year=1960 dt-pub=196006 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Studies on the iron metabolism of erythroblasts in various blood diseases en-subtitle= kn-subtitle= en-abstract= kn-abstract=

The serum iron contents and the number of sideroblasts from various patients and the radioactivity of erythroblasts from the same patients incubated with Fe55 have been observed. The results have proved that in the case with accelerated erythropoietic function like polycythemia vera and in the iron deficient state like idiopathic hypochromic anemia, the serum iron level and the number of sideroblast are lower than those in normal persons and higher in radioactivity in erythroblasts, whereas in the case with low erythropoietic function like hypoplastic anemia the former values are higher and lower in radioactivity of erythroblasts. There is an inverse correlation between the average number of stainable iron granules and the average rate of radioactive iron appearance in erythroblasts, and the observation on these factors will give an important clue for judging the utilization process of iron in each disease. The limitation of the iron uptake correlating with the hemoglobin synthesis have been discussed.

en-copyright= kn-copyright= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MiyakeTsuyoshi en-aut-sei=Miyake en-aut-mei=Tsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KodaniRi-ichi en-aut-sei=Kodani en-aut-mei=Ri-ichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=8 cd-vols= no-issue=2 article-no= start-page=114 end-page=119 dt-received= dt-revised= dt-accepted= dt-pub-year=1952 dt-pub=195206 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Studies on the Mechanism of Bile Pigment Formation in Vivo. II. On the Process of Intrahepatical Production of Bilirubin. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

1. When hemolysed blood is administered orally to rabbits, in cases of healthy and those with blocked reticulo-endothelial systems, a transient increase in the verdohemoglobin (M. Engel) is seen in circulating blood, while in that of rabbits with impaired parenchymal liver cells, no such increase occurs. 2. On irrigation of hemolysed blood through rabbit livers, in healthy rabbits production of indirect bilirubin may be demonstrated while in that with blockage of the reticulo-endothelial system or with impaired liver parenchymal cells, this may not be seen. Moreover, in this case of blockade of the reticulo-endothelial system. production of verdohemoglobin may be demonstrated. while none whatsoever may be demonstrated in cases of impaired liver parenchmal. On the other hand on irrigation of verdohemoglobin and biliverdin solutions, in healthy and in impaired liver parenchymal cell cases, production of bilirubin may be observed while absolutely none was detected in cases of blocked reticulo-endothelial systems, 3. Concluding from the results stated above and those of clinical experiments stated elsewhere, the following process is assumed: when blood is imposed on the organism it is primarily phagocytosed by the reticulo-endothelial system, next dissolved to verdohemoglobin {M. Engel) in the parenchymal cells of the liver, and then dissolved into globin, iron, and biliverdin in the reticulo-endothelial system, of which biliverdin is further reduced to bilirubin. A portion of this remains in the circulating blood as indirect bilirubin, while the majority of it is esterized in the parenchymal cells of the liver, and proceeds to the bile ducts as direct bilirubin.

en-copyright= kn-copyright= en-aut-name=YamaokaKenji en-aut-sei=Yamaoka en-aut-mei=Kenji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KosakaKiyowo en-aut-sei=Kosaka en-aut-mei=Kiyowo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ShimamuraTokuichi en-aut-sei=Shimamura en-aut-mei=Tokuichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MiyakeTomoshi en-aut-sei=Miyake en-aut-mei=Tomoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University END start-ver=1.4 cd-journal=joma no-vol=56 cd-vols= no-issue=4 article-no= start-page=199 end-page=204 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200208 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effects of phlebotomy on the growth of ferric nitrilotriacetate-induced renal cell carcinoma. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

The ferric nitrilotriacetate-induced carcinogenesis model is unique in that reactive oxygen species-free radicals are involved in the carcinogenic process. But the effects of iron-withdrawal in the progression of renal cell carcinoma are not well understood. We performed repeated phlebotomies on animals that had been administered ferric nitrilotriacetate in the initiation stage of renal cell carcinoma (phlebotomy group), and compared the development of renal tumors with those not receiving repeated phlebotomies (non-phlebotomy group). Ferric nitrilotriacetate-treated male Wistar rats were randomly divided into 2 groups: a phlebotomy group (21 rats) and a non-phlebotomy group (17 rats). Ten age-adjusted normal rats were also observed as a normal group. Hematocrit was maintained under 25% in the phlebotomy group. Hematocrit levels in the normal group and in the non-phlebotomy group were not significantly different. As a result, the incidence of renal cell carcinoma was not significantly different between phlebotomy and non-phlebotomy animals. However, the total weight of the renal cell carcinoma was significantly heavier in the animals from non-phlebotomy group than in those from the phlebotomy group (23.64 g +/- 18.54 vs. 54.40 g +/- 42.40, P < 0.05). The present study demonstrated that phlebotomy after the administration of ferric nitrilotriacetate did not reduce the incidence of renal cell carcinoma. In addition, we showed that iron withdrawal at the promotion stage of carcinogenesis will retard tumor growth.

en-copyright= kn-copyright= en-aut-name=MizoteAkiko en-aut-sei=Mizote en-aut-mei=Akiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=HidaAkira I en-aut-sei=Hida en-aut-mei=Akira I kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HosakoMutsumi en-aut-sei=Hosako en-aut-mei=Mutsumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=FujisawaMasayoshi en-aut-sei=Fujisawa en-aut-mei=Masayoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KamekawaMika en-aut-sei=Kamekawa en-aut-mei=Mika kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=OkadaShigeru en-aut-sei=Okada en-aut-mei=Shigeru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Okayama University affil-num=6 en-affil= kn-affil=Okayama University en-keyword=ferric nitrilotriacetate kn-keyword=ferric nitrilotriacetate en-keyword=renal cell carcinoma kn-keyword=renal cell carcinoma en-keyword=phlebotomy kn-keyword=phlebotomy END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=5 article-no= start-page=421 end-page=424 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=198510 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=The role of the corpus callosum in interhemispheric propagation of iron-induced epileptogenic activity in the rat. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

In iron-induced epilepsy, partial section of the corpus callosum resulted in a decrease in rats showing dominant spike activity on the side of secondary focus and an increase in rats showing almost equal spike activity on the sides of primary and secondary focus in electrocorticograms (ECoGs). Changes in ECoG spike frequencies caused by sectioning the corpus callosum included an increase in unilateral spikes on the side of primary focus, a decrease in unilateral spikes on the side of secondary focus, and an increase in bilateral spikes appearing almost synchronously on both sides.

en-copyright= kn-copyright= en-aut-name=MoriwakiAkiyoshi en-aut-sei=Moriwaki en-aut-mei=Akiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=HattoriYukio en-aut-sei=Hattori en-aut-mei=Yukio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HayashiYasushi en-aut-sei=Hayashi en-aut-mei=Yasushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SunamiTakaaki en-aut-sei=Sunami en-aut-mei=Takaaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=HoriYasuo en-aut-sei=Hori en-aut-mei=Yasuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Okayama University en-keyword=corpus callosum kn-keyword=corpus callosum en-keyword=cerebral cortex kn-keyword=cerebral cortex en-keyword=iron-induced epilepsy kn-keyword=iron-induced epilepsy en-keyword=electrocorticographic spike activity kn-keyword=electrocorticographic spike activity en-keyword=rat kn-keyword=rat END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=5 article-no= start-page=347 end-page=360 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=198510 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Distribution of ferritin and hemosiderin in the liver, spleen and bone marrow of normal, phlebotomized and iron overloaded rats. en-subtitle= kn-subtitle= en-abstract= kn-abstract=

The distribution of ferritin has been studied in many tissues, but has not yet been established on the cellular level. We investigated the cellular distribution of ferritin in the liver, spleen and bone marrow using the immunoperoxidase method, and compared it with that of hemosiderin. We also examined changes in the distribution of these proteins after phlebotomy and iron overload. In normal rats, ferritin was seen in centrilobular hepatocytes, Kupffer cells, macrophages in the red and white pulp of the spleen and central macrophages in bone marrow. Hemosiderin was observed almost exclusively in the red pulp and partly in tangible body macrophages of the white pulp. After phlebotomy, neither ferritin nor hemosiderin were detectable in these cells except for ferritin-positive cells in the white pulp, which showed little change after either phlebotomy or iron overload. In iron overloaded rats, both ferritin and hemosiderin increased in hepatocytes and reticulo-endothelial (RE) cells. Ferritin-positive cells in the liver were mainly located in the periportal area. These results indicated that hepatocytes and RE cells except for those in the white pulp may play an important role in iron storage, and that ferritin-positive cells in the white pulp may have a function other than iron reserve. They also suggested that the zonal distribution of ferritin-positive hepatocytes may be due to microcirculation in the hepatic lobules.

en-copyright= kn-copyright= en-aut-name=MatsunoTsuyoshi en-aut-sei=Matsuno en-aut-mei=Tsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MoriMasaharu en-aut-sei=Mori en-aut-mei=Masaharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=AwaiMichiyasu en-aut-sei=Awai en-aut-mei=Michiyasu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama Univeristy en-keyword=immunoperoxidase method kn-keyword=immunoperoxidase method en-keyword=ferritin kn-keyword=ferritin en-keyword=hemosiderin kn-keyword=hemosiderin END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=4 article-no= start-page=321 end-page=328 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=198508 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Serum and urinary ferritin levels in patients with rheumatoid arthritis en-subtitle= kn-subtitle= en-abstract= kn-abstract=

The serum and urinary ferritin levels in 52 RA patients were measured by the 2-site immunoradiometric assay method. Serum ferritin levels in RA patients correlated with C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) but not with serum iron levels and hemoglobin concentrations, although they were within the normal range. High serum ferritin levels were associated with sera with hyper gamma-globulin and rheumatoid factors. In sequential studies, serum ferritin changed in parallel with ESR, CRP and disease activity in a majority of the patients. The urinary ferritin levels and u/s ratios in some RA patients were higher than control values. Higher values were found particularly in the group of patients under gold therapy but not in groups under other treatments.

en-copyright= kn-copyright= en-aut-name=NishiyaKoji en-aut-sei=Nishiya en-aut-mei=Koji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MatsuedaHideki en-aut-sei=Matsueda en-aut-mei=Hideki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ShirakamiToshiaki en-aut-sei=Shirakami en-aut-mei=Toshiaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=HatanoMakoto en-aut-sei=Hatano en-aut-mei=Makoto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=YanoKeisuke en-aut-sei=Yano en-aut-mei=Keisuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=OguraToshiro en-aut-sei=Ogura en-aut-mei=Toshiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TakaokaMichio en-aut-sei=Takaoka en-aut-mei=Michio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=HirakiYoshio en-aut-sei=Hiraki en-aut-mei=Yoshio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=AonoKaname en-aut-sei=Aono en-aut-mei=Kaname kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=EzawaHidemitsu en-aut-sei=Ezawa en-aut-mei=Hidemitsu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=OtaZensuke en-aut-sei=Ota en-aut-mei=Zensuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University affil-num=4 en-affil= kn-affil=Okayama University affil-num=5 en-affil= kn-affil=Okayama University affil-num=6 en-affil= kn-affil=Okayama University affil-num=7 en-affil= kn-affil=Okayama University affil-num=8 en-affil= kn-affil=Okayama University affil-num=9 en-affil= kn-affil=Okayama University affil-num=10 en-affil= kn-affil=Okayama University affil-num=11 en-affil= kn-affil=Okayama University en-keyword=rheumatoid arthritis kn-keyword=rheumatoid arthritis en-keyword=serum ferritin kn-keyword=serum ferritin en-keyword=urinary ferritin kn-keyword=urinary ferritin en-keyword=gold therapy kn-keyword=gold therapy END start-ver=1.4 cd-journal=joma no-vol=12 cd-vols= no-issue=2 article-no= start-page=127 end-page=138 dt-received= dt-revised= dt-accepted= dt-pub-year=1958 dt-pub=195807 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Study on sideroblasts as a determi­nation method of the erythropoietic function of bone marrow en-subtitle= kn-subtitle= en-abstract= kn-abstract=

With the purpose to study sideroblasts as a means of diagnosing blood diseases and to pursue the metabolism of non-hemin iron in erythroblasts we investigated sideroblasts (erythroblasts containing iron granules stainable by Prussian blue) under various erythropoietic conditions in the human and rabbits, and obtained the following results: 1. In blood diseases the proportion of sideroblasts in the case of low erythropoietic condition is higher and in the case with accelerated erythropoietic condition and of iron deficiency it tends to be lower than that in normal persons. Further, obtaining sideroblastogram and sideroblast ratio (S. r.) from the classification of Types I, Ⅱ, and Ⅲ according to the iron granule content, it has been proven that abnormal conditions can be clearly distinguished from the normal, indicating that sideroblasts are closely associated with erythropoietic function. This is proven to be a far superior method for the diagnosis as well as for the prognosis of blood diseases than the determination of serum iron. 2. In experimental anemic rabbits the relationship of sideroblasts to the condition of erythropoietic function is still more clearly recognized, and it has been found that variations in the sideroblast count is dependent upon the condition of the equilibrium between the iron supply from serum iron and the iron utilization controlled by the erythropoietic function. 3. In addition, in the iron-treated rabbits under various erythropoietic conditions we have been able to confirm that there are a certain mechanism and a limitation to the iron intake by erythroblasts, and that erythroblasts take essentially three steps of metabolic processes, namely, intake, retention, and utilization of iron almost simultaneously, in the latter half of the maturation stage.

en-copyright= kn-copyright= en-aut-name=HirakiKiyoshi en-aut-sei=Hiraki en-aut-mei=Kiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University END